284 lines
13 KiB
JSON
284 lines
13 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-48593",
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"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
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"state": "PUBLISHED",
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"assignerShortName": "EEF",
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"dateReserved": "2026-05-22T09:36:56.834Z",
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"datePublished": "2026-05-26T19:46:43.980Z",
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"dateUpdated": "2026-05-27T15:40:57.317Z"
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},
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"containers": {
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"cna": {
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"affected": [
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{
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"collectionURL": "https://repo.hex.pm",
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"cpes": [
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"cpe:2.3:a:oban_web_project:oban_web:*:*:*:*:*:*:*:*"
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],
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"defaultStatus": "unaffected",
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"modules": [
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"'Elixir.Oban.Web.CronExpr'"
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],
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"packageName": "oban_web",
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"packageURL": "pkg:hex/oban_web",
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"product": "oban_web",
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"programFiles": [
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"lib/oban/web/cron_expr.ex"
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],
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"programRoutines": [
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{
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"name": "'Elixir.Oban.Web.CronExpr':describe/1"
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},
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{
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"name": "'Elixir.Oban.Web.CronExpr':parse_range/1"
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},
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{
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"name": "'Elixir.Oban.Web.CronExpr':expand_dom_parts/1"
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},
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{
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"name": "'Elixir.Oban.Web.CronExpr':expand_dow_parts/1"
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}
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],
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"vendor": "oban-bg",
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"versions": [
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{
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"lessThan": "2.12.5",
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"status": "affected",
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"version": "2.12.0",
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"versionType": "semver"
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}
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]
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},
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{
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"collectionURL": "https://github.com",
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"cpes": [
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"cpe:2.3:a:oban_web_project:oban_web:*:*:*:*:*:*:*:*"
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],
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"defaultStatus": "unaffected",
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"modules": [
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"'Elixir.Oban.Web.CronExpr'"
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],
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"packageName": "oban-bg/oban_web",
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"packageURL": "pkg:github/oban-bg/oban_web",
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"product": "oban_web",
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"programFiles": [
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"lib/oban/web/cron_expr.ex"
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],
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"programRoutines": [
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{
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"name": "'Elixir.Oban.Web.CronExpr':describe/1"
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},
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{
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"name": "'Elixir.Oban.Web.CronExpr':parse_range/1"
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},
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{
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"name": "'Elixir.Oban.Web.CronExpr':expand_dom_parts/1"
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},
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{
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"name": "'Elixir.Oban.Web.CronExpr':expand_dow_parts/1"
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}
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],
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"repo": "https://github.com/oban-bg/oban_web.git",
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"vendor": "oban-bg",
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"versions": [
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{
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"lessThan": "9998b7e284e02fdd4645dd6231760038e63b584d",
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"status": "affected",
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"version": "a97c7960bb389b05aaab4cf8042985f02ceddc24",
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"versionType": "git"
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}
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]
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}
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],
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"configurations": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<p>The vulnerability is exploitable when an attacker with access to schedule cron jobs submits a malicious cron expression. The crash is triggered when a user with dashboard access views the cron job list, which calls <tt>'Elixir.Oban.Web.CronExpr':describe/1</tt> to render the expression.</p>"
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}
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],
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"value": "The vulnerability is exploitable when an attacker with access to schedule cron jobs submits a malicious cron expression. The crash is triggered when a user with dashboard access views the cron job list, which calls 'Elixir.Oban.Web.CronExpr':describe/1 to render the expression."
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"cpeMatch": [
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{
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"criteria": "cpe:2.3:a:oban_web_project:oban_web:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "2.12.5",
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"versionStartIncluding": "2.12.0",
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"vulnerable": true
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}
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],
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"negate": false,
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"operator": "OR"
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}
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],
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"operator": "AND"
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}
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],
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"credits": [
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{
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"lang": "en",
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"type": "finder",
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"value": "Peter Ullrich"
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},
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{
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"lang": "en",
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"type": "remediation developer",
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"value": "Shannon Selbert"
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},
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{
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"lang": "en",
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"type": "analyst",
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"value": "Jonatan Männchen / EEF"
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<p>Uncontrolled Resource Consumption vulnerability in oban-bg oban_web (<tt>'Elixir.Oban.Web.CronExpr'</tt> modules) allows memory exhaustion via unbounded cron range expansion.</p><p>An attacker with access to schedule cron jobs can submit a malicious cron expression such as <tt>\"0 0 1-100000000 * *\"</tt>. When a user with dashboard access views the cron job list, <tt>'Elixir.Oban.Web.CronExpr':describe/1</tt> is called to render the expression. <tt>parse_range/1</tt> parses both range endpoints via <tt>Integer.parse/1</tt> with no bounds check, and the downstream helpers <tt>expand_dom_parts/1</tt> and <tt>expand_dow_parts/1</tt> materialise the range eagerly via <tt>Enum.to_list/1</tt>, causing allocation of ~2.4 GB and stalling or crashing the BEAM node. A sibling helper <tt>extract_dom_values</tt> already validates range bounds, but the expansion helpers do not.</p><p>This issue affects oban_web: from 2.12.0 before 2.12.5.</p>"
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}
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],
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"value": "Uncontrolled Resource Consumption vulnerability in oban-bg oban_web ('Elixir.Oban.Web.CronExpr' modules) allows memory exhaustion via unbounded cron range expansion.\n\nAn attacker with access to schedule cron jobs can submit a malicious cron expression such as \"0 0 1-100000000 * *\". When a user with dashboard access views the cron job list, 'Elixir.Oban.Web.CronExpr':describe/1 is called to render the expression. parse_range/1 parses both range endpoints via Integer.parse/1 with no bounds check, and the downstream helpers expand_dom_parts/1 and expand_dow_parts/1 materialise the range eagerly via Enum.to_list/1, causing allocation of ~2.4 GB and stalling or crashing the BEAM node. A sibling helper extract_dom_values already validates range bounds, but the expansion helpers do not.\n\nThis issue affects oban_web: from 2.12.0 before 2.12.5."
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}
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],
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"impacts": [
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{
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"capecId": "CAPEC-130",
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"descriptions": [
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{
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"lang": "en",
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"value": "CAPEC-130 Excessive Allocation"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV4_0": {
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"attackComplexity": "LOW",
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"attackRequirements": "PRESENT",
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"attackVector": "NETWORK",
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"baseScore": 5.9,
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"baseSeverity": "MEDIUM",
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"privilegesRequired": "LOW",
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"subAvailabilityImpact": "NONE",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"userInteraction": "PASSIVE",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
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"version": "4.0",
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"vulnAvailabilityImpact": "HIGH",
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"vulnConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "NONE"
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},
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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]
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-400",
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"description": "CWE-400 Uncontrolled Resource Consumption",
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"lang": "en",
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"type": "CWE"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
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"shortName": "EEF",
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"dateUpdated": "2026-05-27T15:40:57.317Z"
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},
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"references": [
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{
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"tags": [
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"vendor-advisory",
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"related"
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],
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"url": "https://github.com/oban-bg/oban_web/security/advisories/GHSA-6xh2-93p9-vqh4"
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},
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{
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"tags": [
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"related"
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],
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"url": "https://cna.erlef.org/cves/CVE-2026-48593.html"
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},
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{
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"tags": [
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"related"
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],
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"url": "https://osv.dev/vulnerability/EEF-CVE-2026-48593"
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},
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{
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"tags": [
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"patch"
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],
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"url": "https://github.com/oban-bg/oban_web/commit/9998b7e284e02fdd4645dd6231760038e63b584d"
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}
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],
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"source": {
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"discovery": "EXTERNAL"
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},
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"title": "Unbounded range expansion in cron describe causes memory exhaustion in oban_web",
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"x_generator": {
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"engine": "cvelib 1.8.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-05-26T20:46:18.908875Z",
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"id": "CVE-2026-48593",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-05-26T20:46:24.889Z"
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}
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}
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]
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}
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} |