CVE-2026-48089 DevGuard has improper authorization on public assets
Authenticated users can modify vulnerability data on public assets without proper authorization, requiring a patch or configuration change.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-48089?
CVE-2026-48089 is a high-severity missing authorization vulnerability in l3montree-dev devguard, published on 19 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
DevGuard provides vulnerability management for the full software supply chain. Prior to 1.4.2, on 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 VEX rule create / update / reapply / delete; dependency-vuln event creation (accept / reject / mitigate decisions), batch event creation, vuln sync, and mitigation; license risk creation; external reference writes; and/or artifact creation and license refresh. The attacker needs a valid account on the instance, but no membership in the victim organization, project, or asset is required. Version `v1.4.2`contains a patch. As a workaround, 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.
Which versions are affected by CVE-2026-48089?
3 open source packages ship an affected version, including github.com/l3montree-dev/devguard.
| Package | Affected | Fixed in |
|---|---|---|
github.com/l3montree-dev/devguard Go | All versions | 1.4.2 |
github.com/l3montree-dev/devguard Go | All versions | 1.4.2 |
github.com/l3montree-dev/devguard Go | All versions | 1.4.2 |
How do I fix CVE-2026-48089?
Upgrade github.com/l3montree-dev/devguard to 1.4.2 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-48089 being exploited?
There is no known exploitation of CVE-2026-48089 in the wild and no public exploit code.
Sources
Also known as GHSA-6p54-fw2f-q7gf, GO-2026-5183.