214 lines
9.6 KiB
JSON
214 lines
9.6 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-2026-42934",
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"assignerOrgId": "9dacffd4-cb11-413f-8451-fbbfd4ddc0ab",
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"state": "PUBLISHED",
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"assignerShortName": "f5",
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"dateReserved": "2026-04-30T23:04:27.960Z",
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"datePublished": "2026-05-13T14:12:44.331Z",
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"dateUpdated": "2026-06-08T20:34:05.147Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "9dacffd4-cb11-413f-8451-fbbfd4ddc0ab",
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"shortName": "f5",
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"dateUpdated": "2026-06-08T20:34:05.147Z"
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},
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"title": "NGINX ngx_http_charset_module vulnerability",
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"datePublic": "2026-05-13T14:00:00.000Z",
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"cweId": "CWE-125",
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"description": "CWE-125 Out-of-bounds Read",
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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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"affected": [
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{
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"vendor": "F5",
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"product": "NGINX Plus",
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"modules": [
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"ngx_http_charset_module"
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],
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"versions": [
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{
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"status": "unaffected",
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"version": "R37",
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"lessThan": "*",
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"versionType": "custom"
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},
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{
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"status": "affected",
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"version": "R36",
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"lessThan": "R36 P4",
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"versionType": "custom"
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},
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{
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"status": "affected",
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"version": "R32",
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"lessThan": "R32 P6",
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"versionType": "custom"
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}
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],
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"defaultStatus": "unknown"
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},
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{
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"vendor": "F5",
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"product": "NGINX Open Source",
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"modules": [
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"ngx_http_charset_module"
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],
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"versions": [
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{
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"status": "unaffected",
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"version": "1.31.0",
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"lessThan": "*",
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"versionType": "semver"
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},
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{
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"status": "affected",
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"version": "0.3.50",
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"lessThan": "1.30.1",
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"versionType": "semver"
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}
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],
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"defaultStatus": "unaffected"
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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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"value": "NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_charset_module module. When charset, source_charset, and charset_map and proxy_pass with disabled buffering (\"off\") directives are configured, unauthenticated attackers can send requests that with conditions beyond the attackers' control to cause a heap buffer over-read in the NGINX worker process, leading to limited disclosure of memory or a restart.\n\n\n\n Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.",
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"supportingMedia": [
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{
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"type": "text/html",
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"base64": false,
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"value": "<span style=\"background-color: rgb(255, 255, 255);\">\n\n<span style=\"background-color: rgb(255, 255, 255);\">NGINX Plus and NGINX Open Source have a vulnerability in the </span><strong>ngx_http_charset_module </strong><span style=\"background-color: rgb(255, 255, 255);\">module. When </span><strong>charset</strong><span style=\"background-color: rgb(255, 255, 255);\">, </span><strong>source_charset</strong><span style=\"background-color: rgb(255, 255, 255);\">, and </span><strong>charset_map</strong><span style=\"background-color: rgb(255, 255, 255);\"> and </span><strong>proxy_pass</strong><span style=\"background-color: rgb(255, 255, 255);\"> with disabled buffering (\"off\") directives are configured, unauthenticated attackers can send requests that with conditions beyond the attackers' control to cause a heap buffer over-read in the NGINX worker process, leading to limited disclosure of memory or a restart.</span>\n\n</span>\n\n Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated."
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}
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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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"url": "https://my.f5.com/manage/s/article/K000161028",
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"tags": [
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"vendor-advisory",
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"patch"
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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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"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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"cvssV3_1": {
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"version": "3.1",
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"attackVector": "NETWORK",
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"attackComplexity": "HIGH",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"scope": "UNCHANGED",
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"confidentialityImpact": "LOW",
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"integrityImpact": "NONE",
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"availabilityImpact": "LOW",
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"baseSeverity": "MEDIUM",
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"baseScore": 4.8,
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"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L"
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}
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},
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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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"cvssV4_0": {
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"version": "4.0",
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"attackRequirements": "PRESENT",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "LOW",
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"subConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"vulnAvailabilityImpact": "LOW",
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"subAvailabilityImpact": "NONE",
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"Safety": "NOT_DEFINED",
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"Automatable": "NOT_DEFINED",
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"Recovery": "NOT_DEFINED",
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"valueDensity": "NOT_DEFINED",
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"vulnerabilityResponseEffort": "NOT_DEFINED",
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"providerUrgency": "NOT_DEFINED",
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"baseSeverity": "MEDIUM",
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"baseScore": 6.3,
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N"
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}
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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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"value": "F5 acknowledges David Carlier, Zhenpeng (Leo) Lin of depthfirst, and GAO Liyou for bringing this issue to our attention and following the highest standards of coordinated disclosure.",
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"type": "finder"
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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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"x_generator": {
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"engine": "F5 SIRTBot v1.0"
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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": "2026-05-13T15:55:18.483975Z",
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"id": "CVE-2026-42934",
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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": "2026-05-13T16:07:10.334Z"
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}
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}
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]
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}
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} |