{"cve":"CVE-2026-42300","nvd":{"published":"2026-05-12T18:17:24.390","modified":"2026-10-26T18:10:00.173","status":"Deferred","description":"DevGuard provides vulnerability management for the full software supply chain. Prior to 1.2.2, the SessionMiddleware accepts a client-supplied X-Admin-Token HTTP request header and uses its raw string value as the authenticated userID when no Kratos session cookie is present. An unauthenticated attacker who knows or can guess a target user's Kratos identity UUID can issue requests as that user. Where the target user is an organisation admin or owner, this gives the attacker full control over that organisation's DevGuard resources. This vulnerability is fixed in 1.2.2.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":9.3},"cvss_v3":null,"cwes":["CWE-288"],"references":["https://github.com/l3montree-dev/devguard/commit/6f38310bf93b2a63df3055038f4da82b1f4e6d9a","https://github.com/l3montree-dev/devguard/security/advisories/GHSA-2g9v-7mr5-fgjg"],"products":[],"source":"nvd","synced_at":"2026-10-26T18:27:13.530666824+00:00"},"epss":{"cve":"CVE-2026-42300","score":0.00257,"percentile":0.17194,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-2g9v-7mr5-fgjg","url":"https://osv.dev/vulnerability/GHSA-2g9v-7mr5-fgjg","summary":"DevGuard has an unauthenticated identity assertion via `X-Admin-Token` header","modified":"2026-05-20T19:41:10.906775451Z","packages":[{"ecosystem":"Go","name":"github.com/l3montree-dev/devguard","purl":"pkg:golang/github.com/l3montree-dev/devguard","ranges":["<1.2.2"],"fixed":["1.2.2"]}]},{"id":"GO-2026-4988","url":"https://osv.dev/vulnerability/GO-2026-4988","summary":"DevGuard has an unauthenticated identity assertion via `X-Admin-Token` header in github.com/l3montree-dev/devguard","modified":"2026-05-20T19:30:12.893001507Z","packages":[{"ecosystem":"Go","name":"github.com/l3montree-dev/devguard","purl":"pkg:golang/github.com/l3montree-dev/devguard","ranges":["<1.2.2"],"fixed":["1.2.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}