{"api_version":"1","generated_at":"2026-07-25T00:15:51+00:00","cve":"CVE-2026-13204","urls":{"html":"https://cve.report/CVE-2026-13204","api":"https://cve.report/api/cve/CVE-2026-13204.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-13204","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-13204"},"summary":{"title":"Unexpected exit in certain situations with NSEC and NSEC3 both present","description":"If a provably insecure domain is covered by both an NSEC and NSEC3 record at the parent, and there exist an RRSIG for only one of these types, then BIND may exit unexpectedly with an assertion while validating this proof.\nThis issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.","state":"PUBLISHED","assigner":"isc","published_at":"2026-07-22 15:16:52","updated_at":"2026-07-22 20:33:11"},"problem_types":["CWE-617","CWE-617 CWE-617 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would like to thank Qifan Zhang of Palo Alto Networks for bringing this vulnerability to our attention."}],"datePublic":"2026-07-22T00:00:00.000Z","descriptions":[{"lang":"en","value":"If a provably insecure domain is covered by both an NSEC and NSEC3 record at the parent, and there exist an RRSIG for only one of these types, then BIND may exit unexpectedly with an assertion while validating this proof.\nThis issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1."}],"exploits":[{"lang":"en","value":"We are not aware of any active exploits."}],"impacts":[{"descriptions":[{"lang":"en","value":"BIND may exit unexpectedly resulting in a DoS while validating such a 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9.20.26, 9.21.24, or 9.20.26-S1."}],"source":{"discovery":"EXTERNAL"},"title":"Unexpected exit in certain situations with NSEC and NSEC3 both present","workarounds":[{"lang":"en","value":"No workarounds known."}],"x_generator":{"engine":"cvelib 1.8.0"}}},"cveMetadata":{"assignerOrgId":"404fd4d2-a609-4245-b543-2c944a302a22","assignerShortName":"isc","cveId":"CVE-2026-13204","datePublished":"2026-07-22T14:15:30.557Z","dateReserved":"2026-06-24T14:12:52.934Z","dateUpdated":"2026-07-22T18:52:12.584Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-22 15:16:52","lastModifiedDate":"2026-07-22 20:33:11","problem_types":["CWE-617","CWE-617 CWE-617 Reachable 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