{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-58187","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","state":"PUBLISHED","assignerShortName":"apache","dateReserved":"2026-06-29T16:35:39.110Z","datePublished":"2026-07-29T09:03:22.659Z","dateUpdated":"2026-10-01T17:05:24.712Z"},"containers":{"cna":{"providerMetadata":{"orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","shortName":"apache","dateUpdated":"2026-10-01T17:05:24.712Z"},"title":"Apache Traffic Server: Multiplexer plugin chunk decoder enables a denial of service","problemTypes":[{"descriptions":[{"description":"CWE-787 Out-of-bounds Write","lang":"en","cweId":"CWE-787","type":"CWE"}]}],"source":{"discovery":"UNKNOWN"},"affected":[{"vendor":"Apache Software Foundation","product":"Apache Traffic Server","versions":[{"status":"affected","version":"8.0.0","lessThanOrEqual":"8.1.11","versionType":"semver"},{"status":"affected","version":"9.0.0","lessThanOrEqual":"9.2.14","versionType":"semver"},{"status":"affected","version":"10.0.0","lessThanOrEqual":"10.1.3","versionType":"semver"}],"defaultStatus":"unaffected"}],"descriptions":[{"value":"The Apache Traffic Server multiplexer plugin overruns its chunk-decode buffer on upstream input, enabling denial of service.\n\n\n\nThis issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3.\n\n\n\nUsers are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.","lang":"en","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>The Apache Traffic Server multiplexer plugin overruns its chunk-decode buffer on upstream input, enabling denial of service.</p><p>This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3.</p><p>Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.</p>"}]}],"references":[{"url":"https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6d","tags":["vendor-advisory"]}],"metrics":[{"other":{"type":"Textual description of severity","content":{"text":"moderate"}},"scenarios":[{"lang":"en","value":"GENERAL"}]},{"scenarios":[{"lang":"en","value":"GENERAL"}],"format":"CVSS","cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW","baseSeverity":"LOW","baseScore":3.7,"vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"}},{"scenarios":[{"lang":"en","value":"GENERAL"}],"format":"CVSS","cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"MEDIUM","baseScore":6.3,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"}}],"credits":[{"lang":"en","value":"Omkhar Arasaratnam","type":"reporter"}],"x_generator":{"engine":"scripts/cve_render.py"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-29T12:11:28.229252Z","id":"CVE-2026-58187","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-29T12:11:35.420Z"}}]}}