{"id":"GHSA-6p54-fw2f-q7gf","revision":"122eb2fe5965497abaa2b315103f1f0d","records":[{"revision":"122eb2fe5965497abaa2b315103f1f0d","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-6p54-fw2f-q7gf","aliases":["CVE-2026-48089","GO-2026-5183"],"title":"DevGuard has improper authorization on public assets","description":"### Impact\n\nOn a DevGuard API instance with one or more **public assets**, any authenticated user — including users from a different organization with no membership or role in the affected org/project — can create, update, reapply, and delete **VEX rules** on those public assets. The same flaw affects the other vulnerability-triage write endpoints exposed under a public asset, including:\n\n- VEX rule create / update / reapply / delete\n- Dependency-vuln event creation (accept / reject / mitigate decisions), batch event creation, vuln sync, and mitigation\n- License risk creation\n- External reference writes\n- Artifact creation and license refresh\n\nThe attacker needs a valid account on the instance, but no membership in the victim organization, project, or asset is required.\n\n**Security impact** is primarily to **integrity** of the vulnerability picture of public assets: an attacker can mark CVEs as false-positive, silence vulnerabilities, attach misleading justifications, or delete legitimate triage rules — undermining the trustworthiness of every consumer of the affected asset's VEX/SBOM output. Because public assets are by definition consumed by third parties (downstream users, supply-chain consumers, the published vex.json/sbom.json), the blast radius extends to anyone relying on that data.\n\nPrivate assets are **not affected** by this advisory: the public-read exemption that enables the bypass does not apply to them, and access remains correctly gated by organization/project membership. The private setting is only relevant in DevGuard itself —  there is no impact given when you have an open-source project on e.g. GitLab/GitHub and a private DevGuard asset connected.\n\n### Patches\n\nVersion `v1.4.2`contains a patch. Users should upgrade to the patched release as soon as it is available.\n\n### Workarounds\n\nIf developers cannot upgrade their applications immediately:\n\n- ** They should make affected assets non-public.** In the asset settings, switch visibility from public to private. This removes the public-read exemption in the access-control middleware and restores correct authorization on all write endpoints for that asset. Downstream consumers that previously relied on the public `vex.json` / `sbom.json` endpoints will need to be granted explicit access or must receive an exported file version until the patched release is deployed.\n\n### Resources\nFixed commit: https://github.com/l3montree-dev/devguard/commit/1be88ec1309a5dc0566e35a23bdc4ea3ecd11417\n\n### Credit\n\nDeevGuard thanks @philipflohr ([awesome-it.de](https://awesome-it.de/)) for finding and responsibly reporting this vulnerability!","state":0,"publishedAt":"2026-06-11T20:26:18+00:00","modifiedAt":"2026-07-15T22:00:51.113908+00:00","affected":[{"ecosystem":"Go","name":"github.com/l3montree-dev/devguard","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.4.2"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/l3montree-dev/devguard/security/advisories/GHSA-6p54-fw2f-q7gf","https://nvd.nist.gov/vuln/detail/CVE-2026-48089","https://github.com/l3montree-dev/devguard/commit/1be88ec1309a5dc0566e35a23bdc4ea3ecd11417","https://github.com/l3montree-dev/devguard"],"sourceUrl":"https://github.com/advisories/GHSA-6p54-fw2f-q7gf","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-6p54-fw2f-q7gf","identifiers":["GHSA-6p54-fw2f-q7gf","CVE-2026-48089","GO-2026-5183"]},"retained":false,"historicalAffected":[]}],"coverage":[]}