{"id":"CVE-2026-39934","aliases":["EUVD-2026-19978","GHSA-cgh3-rgf8-476j"],"status":"published","title":"Growth Experiments ReassignMenteesJob runs as an infinite loop","description":"Loop with unreachable exit condition ('infinite loop') vulnerability in The Wikimedia Foundation Mediawiki - GrowthExperiments Extension allows Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions. This issue was remediated only on the `master` branch.","severity":{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00332,"percentile":0.26627,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-835"],"published":"2026-04-07T22:00:46Z","modified":"2026-07-21T19:10:00Z","products":[{"vendor":"the wikimedia foundation","product":"mediawiki - growthexperiments extension"}],"references":[{"url":"https://phabricator.wikimedia.org/T418222"},{"url":"https://gerrit.wikimedia.org/r/c/1243874"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39934"},{"url":"https://github.com/advisories/GHSA-cgh3-rgf8-476j"}],"sources":{"cve":[{"id":"CVE-2026-39934","title":"Growth Experiments ReassignMenteesJob runs as an infinite loop","description":"Loop with unreachable exit condition ('infinite loop') vulnerability in The Wikimedia Foundation Mediawiki - GrowthExperiments Extension allows Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions. This issue was remediated only on the `master` branch.","status":"published","published":"2026-04-07T22:00:46.1Z","modified":"2026-04-08T22:04:41.006Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L","level":"medium","assessor":"cna"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T14:20:02.290587Z"}],"euvd":[{"id":"EUVD-2026-19978","description":"Loop with unreachable exit condition ('infinite loop') vulnerability in The Wikimedia Foundation Mediawiki - GrowthExperiments Extension allows Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions. This issue was remediated only on the `master` branch.","status":"published","published":"2026-04-07T22:00:46Z","modified":"2026-04-08T22:04:41Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L","level":"medium"}],"updated_at":"2026-11-02T19:24:31.230458Z"}],"ghsa":[{"id":"GHSA-cgh3-rgf8-476j","title":"Loop with unreachable exit condition ('infinite loop') vulnerability in The Wikimedia Foundation...","description":"Loop with unreachable exit condition ('infinite loop') vulnerability in The Wikimedia Foundation Mediawiki - GrowthExperiments Extension allows Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions.This issue affects Mediawiki - GrowthExperiments Extension: 1.45.2, 1.44.4, 1.43.7.","status":"published","published":"2026-04-08T00:30:26Z","modified":"2026-04-08T00:30:32Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T15:07:11.605224Z"}],"nvd":[{"id":"CVE-2026-39934","description":"Loop with unreachable exit condition ('infinite loop') vulnerability in The Wikimedia Foundation Mediawiki - GrowthExperiments Extension allows Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions. This issue was remediated only on the `master` branch.","status":"published","published":"2026-04-07T22:16:24.137Z","modified":"2026-07-21T19:10:00.107Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T14:12:13.535987Z"}]}}