{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-28780","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","state":"PUBLISHED","assignerShortName":"apache","dateReserved":"2026-03-03T12:31:23.999Z","datePublished":"2026-05-05T21:29:41.527Z","dateUpdated":"2026-05-06T15:50:18.682Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Apache HTTP Server","vendor":"Apache Software Foundation","versions":[{"lessThanOrEqual":"2.4.66","status":"affected","version":"0","versionType":"semver"}]}],"credits":[{"lang":"en","type":"finder","value":"Andrew Lacambra"},{"lang":"en","type":"finder","value":"Elhanan Haenel"},{"lang":"en","type":"finder","value":"Tianshuo Han (<hantianshuo233@gmail.com>)"},{"lang":"en","type":"finder","value":"Tristan Madani"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>Heap-based Buffer Overflow vulnerability in mod_proxy_ajp of Apache HTTP Server.<br>If mod_proxy_ajp connects to a malicious AJP server this AJP server can send a malicious AJP message back to mod_proxy_ajp and cause it to write 4 attacker controlled bytes after the end of a heap based buffer.</p><p>This issue affects Apache HTTP Server: through 2.4.66.</p><p>Users are recommended to upgrade to version 2.4.67, which fixes the issue.</p>"}],"value":"Heap-based Buffer Overflow vulnerability in mod_proxy_ajp of Apache HTTP Server.\nIf mod_proxy_ajp connects to a malicious AJP server this AJP server can send a malicious AJP message back to mod_proxy_ajp and cause it to write 4 attacker controlled bytes after the end of a heap based buffer.\n\nThis issue affects Apache HTTP Server: through 2.4.66.\n\nUsers are recommended to upgrade to version 2.4.67, which fixes the issue."}],"metrics":[{"other":{"content":{"text":"low"},"type":"Textual description of severity"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-122","description":"CWE-122 Heap-based Buffer Overflow","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","shortName":"apache","dateUpdated":"2026-05-05T21:29:41.527Z"},"references":[{"tags":["vendor-advisory"],"url":"https://httpd.apache.org/security/vulnerabilities_24.html"}],"source":{"discovery":"UNKNOWN"},"timeline":[{"lang":"en","time":"2026-02-04T12:00:00.000Z","value":"reported"},{"lang":"en","time":"2026-03-18T12:00:00.000Z","value":"reported by 3rd finder"},{"lang":"en","time":"2026-02-28T12:00:00.000Z","value":"reported by 2nd finder"}],"title":"Apache HTTP Server: buffer overflow in mod_proxy_ajp via  ajp_msg_check_header()","x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/05/05/9"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2026-05-05T22:24:30.623Z"}},{"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.8,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-05-06T15:49:38.049896Z","id":"CVE-2026-28780","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-06T15:50:18.682Z"}}]}}