{"id":"CVE-2026-62326","title":"Weblate is a web-based continuous localization platform used to manage software translations","summary":"Weblate is a web-based continuous localization platform used to manage software translations. In versions prior to 2026.7, a user with the built-in \"Edit source\" role can store a malicious regular expression in a source string's flags th…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-400"],"published":"2026-08-26","updated":"2026-09-09","sourceUpdated":"2026-09-09T21:09:13.080","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-62326","references":[{"url":"https://github.com/WeblateOrg/weblate/commit/8fd8431414bec5c86dbc94815319fc474518286a","label":"security-advisories@github.com"},{"url":"https://github.com/WeblateOrg/weblate/security/advisories/GHSA-r52j-4vjp-q949","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.00249,"epssPercentile":0.1651,"ingestedAt":"2026-09-09T21:22:45.556Z","slug":"CVE-2026-62326","body":"## Overview\n\nWeblate is a web-based continuous localization platform used to manage software translations. In versions prior to 2026.7, a user with the built-in \"Edit source\" role can store a malicious regular expression in a source string's flags that is executed without any timeout, allowing them to stall requests and deny service. Regular expressions supplied through the regex: quality check and regex placeholders are compiled during validation but later run against translation content in RegexCheck and PlaceholderCheck with no time limit, so a catastrophic-backtracking pattern like ^(a|aa)+$ can consume CPU indefinitely. Because Weblate re-runs these checks for every linked target unit in the same request when a source unit's flags change, a single edit can trigger sustained CPU-bound denial of service. This issue is fixed in version 2026.7.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}