{"id":"CVE-2026-63006","summary":"Zammad: HTML sanitizer API path allowlist bypass via interior path traversal in img src/srcset","details":"Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, attacker-controlled HTML in inbound emails or tickets could bypass the image URL sanitizer using path traversal sequences. When an authenticated agent views the content, the browser resolves the URL to a protected API endpoint and sends the request with the agent's session cookie, enabling side effects such as forced logout without any user interaction. This issue is fixed in version 7.1.2.","aliases":["GHSA-33p2-cm7w-62g3"],"modified":"2026-09-27T03:47:27.518675829Z","published":"2026-09-25T18:23:13.578Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63006.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-22"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63006.json"},{"type":"ADVISORY","url":"https://github.com/zammad/zammad/security/advisories/GHSA-33p2-cm7w-62g3"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63006"},{"type":"FIX","url":"https://github.com/zammad/zammad/commit/856af85c12413087d6a74ffee25b16048a5ed8c3"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/zammad/zammad","events":[{"introduced":"0"},{"fixed":"856af85c12413087d6a74ffee25b16048a5ed8c3"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"7.1.2"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["7.1.1","7.1.0","7.1.0-alpha","7.0.0-alpha","6.6.0-alpha","6.5.0-alpha","6.4.0-alpha","6.3.0-alpha","6.2.0-alpha","6.1.0-alpha","6.0.0-alpha","5.5.0-alpha","5.4.0-alpha","5.3.0-alpha","5.2.0-alpha","3.7.0","1.6.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63006.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N"}]}