{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-21640","assignerOrgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","state":"PUBLISHED","assignerShortName":"hackerone","dateReserved":"2026-01-01T15:00:02.339Z","datePublished":"2026-01-20T20:48:47.940Z","dateUpdated":"2026-01-21T18:52:43.635Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"HackerOne community member Faraz Ahmed (PakCyberbot) has reported a format string injection in the Revive Adserver settings. When specific character combinations are used in a setting, the admin user console could be disabled due to a fatal PHP error."}],"affected":[{"defaultStatus":"unaffected","vendor":"Revive","product":"Revive Adserver","versions":[{"version":"6","status":"affected","lessThanOrEqual":"6.0.4","versionType":"semver"}]}],"references":[{"url":"https://hackerone.com/reports/3445332"}],"metrics":[{"cvssV3_0":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L","baseScore":2.7,"baseSeverity":"LOW"}}],"providerMetadata":{"orgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","shortName":"hackerone","dateUpdated":"2026-01-20T20:48:47.940Z"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-134","lang":"en","description":"CWE-134 Use of Externally-Controlled Format String"}]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-21T18:32:40.483218Z","id":"CVE-2026-21640","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":"2026-01-21T18:52:43.635Z"}}]}}