149 lines
6.3 KiB
JSON
149 lines
6.3 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-2026-82397",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-08-28T22:00:43.512Z",
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"datePublished": "2026-08-31T21:28:13.958Z",
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"dateUpdated": "2026-09-02T17:39:41.238Z"
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},
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"containers": {
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"cna": {
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"title": "Tornado: Urlencoded body parsing omits max_num_fields, so one request can stall the event loop",
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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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"lang": "en",
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"description": "CWE-400: Uncontrolled Resource Consumption",
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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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"descriptions": [
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{
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"cweId": "CWE-1284",
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"lang": "en",
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"description": "CWE-1284: Improper Validation of Specified Quantity in Input",
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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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"metrics": [
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{
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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "HIGH",
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"baseScore": 7.5,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"version": "3.1"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/tornadoweb/tornado/security/advisories/GHSA-mpf4-983q-p7j4",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/tornadoweb/tornado/security/advisories/GHSA-mpf4-983q-p7j4"
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},
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{
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"name": "https://github.com/tornadoweb/tornado/pull/3704",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/tornadoweb/tornado/pull/3704"
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},
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{
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"name": "https://github.com/tornadoweb/tornado/commit/8d6363ed7b69d5f0da806efe34d256627a2191de",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/tornadoweb/tornado/commit/8d6363ed7b69d5f0da806efe34d256627a2191de"
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},
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{
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"name": "https://github.com/tornadoweb/tornado/releases/tag/v6.5.8",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/tornadoweb/tornado/releases/tag/v6.5.8"
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}
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],
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"affected": [
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{
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"vendor": "tornadoweb",
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"product": "tornado",
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"versions": [
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{
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"version": "< 6.5.8",
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"status": "affected"
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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": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-08-31T21:28:13.958Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.8, Tornado parses application/x-www-form-urlencoded request bodies with urllib.parse.parse_qs in tornado/escape.py without passing max_num_fields. RequestHandler._execute in tornado/web.py parses the body before handler dispatch through HTTPServerRequest._parse_body and parse_body_arguments in tornado/httputil.py, so an unauthenticated request body containing millions of separator-delimited fields can synchronously stall the single-threaded event loop and delay every connection. The body is bounded only by max_buffer_size, which defaults to 104857600 bytes. This issue is fixed in version 6.5.8."
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}
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],
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"source": {
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"advisory": "GHSA-mpf4-983q-p7j4",
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"discovery": "UNKNOWN"
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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": "2026-09-02T17:39:28.982654Z",
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"id": "CVE-2026-82397",
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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": "yes"
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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": "2026-09-02T17:39:41.238Z"
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}
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}
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]
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}
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} |