{"id":"CVE-2023-27172","title":"Xpand IT Write-back Manager v2.3.1 uses weak secret keys to sign JWT tokens","summary":"Xpand IT Write-back Manager v2.3.1 uses weak secret keys to sign JWT tokens. This allows attackers to easily obtain the secret key used to sign JWT tokens via a bruteforce attack.","severity":"critical","cvss":9.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","cwe":["CWE-307"],"vendor":"xpand-it","product":"write-back_manager","affected":["write-back_manager = 2.3.1"],"published":"2023-12-20","updated":"2026-09-16","sourceUpdated":"2026-09-16T20:17:20.303","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-27172","references":[{"url":"https://balwurk.github.io/CVE-2023-27172/","label":"cve@mitre.org"},{"url":"https://ghostline.neocities.org/CVE-2023-27172/","label":"cve@mitre.org"},{"url":"https://balwurk.github.io/CVE-2023-27172/","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2025-05-06T18:48:13.127207Z"},"epss":0.00687,"epssPercentile":0.51259,"ingestedAt":"2026-09-16T21:05:36.829Z","slug":"CVE-2023-27172","body":"## Overview\n\nXpand IT Write-back Manager v2.3.1 uses weak secret keys to sign JWT tokens. This allows attackers to easily obtain the secret key used to sign JWT tokens via a bruteforce attack.\n\n## Affected\n\n- `write-back_manager = 2.3.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":50,"depthScoreParts":{"impact":50.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}