{"id":"CVE-2026-102489","title":"Zammad versions 6.3.0 to 6.5.4 are vulnerable a session hijack vulnerability that leads to remote code execution as the zammad user","summary":"Zammad versions 6.3.0 to 6.5.4 are vulnerable a session hijack vulnerability that leads to remote code execution as the zammad user. The bug is also present in version 7.0.0 to version 7.1.2, but not exploitable due to changes in the und…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-384"],"vendor":"zammad","product":"zammad","affected":["zammad >= 6.3.0, <= 6.5.4"],"patched":["zammad 6.5.4"],"published":"2026-09-30","updated":"2026-10-10","sourceUpdated":"2026-10-10T04:18:08.040","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-102489","references":[{"url":"https://community.zammad.org/t/take-care-local-privilege-escalation-cve-2026-102490-is-reported-as-being-actively-exploited/21297/2","label":"csirt@divd.nl"},{"url":"https://csirt.divd.nl/CVE-2026-102489","label":"csirt@divd.nl"},{"url":"https://csirt.divd.nl/DIVD-2026-00015","label":"csirt@divd.nl"},{"url":"https://zammad.com/en/advisories/cve-2026-102489-cve-2026-102490","label":"csirt@divd.nl"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-102489","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","kev","in-the-wild","exploit-available","cve.org"],"epss":0.01955,"epssPercentile":0.80161,"kev":true,"kevDateAdded":"2026-10-02","kevDueDate":"2026-10-05","kevRansomware":false,"exploited":true,"exploits":{"github":3,"githubRepos":["https://github.com/horizon3ai/CVE-2026-102489","https://github.com/1xPwn/CVE-2026-102489","https://github.com/Hunt-Benito/the-cookie-in-the-error-message-cve-2026-102489-zammad-session-hijack-to-rce"],"checkedAt":"2026-10-27T16:53:30.610Z"},"exploitAvailable":true,"ssvc":{"exploitation":"active","automatable":"yes","technicalImpact":"total","timestamp":"2026-10-02T16:27:26.039890Z"},"scores":{"nvd":9.8,"cna":8.7},"ingestedAt":"2026-09-30T17:13:20.840Z","slug":"CVE-2026-102489","body":"## Overview\n\nZammad versions 6.3.0 to 6.5.4 are vulnerable a session hijack vulnerability that leads to remote code execution as the zammad user. The bug is also present in version 7.0.0 to version 7.1.2, but not exploitable due to changes in the underlying framework.\n\n## Affected\n\n- `zammad >= 6.3.0, <= 6.5.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"hadal","depthScore":79,"depthScoreParts":{"impact":53.9,"likelihood":0.4,"exploitation":25,"ransomware":0},"changes":[{"seq":215192,"id":"CVE-2026-102489","ts":1791002384708,"field":"kev","old":"false","new":"true"},{"seq":215005,"id":"CVE-2026-102489","ts":1790961881797,"field":"exploit_available","old":"false","new":"true"},{"seq":215004,"id":"CVE-2026-102489","ts":1790961881797,"field":"exploited","old":"false","new":"true"},{"seq":215003,"id":"CVE-2026-102489","ts":1790961881797,"field":"cvss","old":"8.7","new":"9.8"},{"seq":215002,"id":"CVE-2026-102489","ts":1790961881797,"field":"severity","old":"high","new":"critical"}]}