CVE-2026-55435 Suspended Coder users retain access to AI Bridge LLM proxy endpoints
Suspended Coder users retain access to AI Bridge LLM proxy endpoints because their API keys are not revoked upon suspension.
- 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-2026-55435?
CVE-2026-55435 is a medium-severity authentication bypass vulnerability in coder, published on 7 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Coder allows organizations to provision remote development environments via Terraform. Starting in version 2.30.0 and prior to versions 2.32.7, 2.33.8, and 2.34.2, AI Bridge proxy endpoints authenticate via `Server.IsAuthorized` in `coderd/aibridgedserver`, which validates key format, expiry, secret and deleted or system users but does not check whether the account is suspended. Because suspension does not revoke existing API keys, a suspended user's unexpired token keeps working. Practical impact is limited to already-issued API keys of suspended users until those keys are deleted. Versions 2.32.7, 2.33.8, and 2.34.2 patch the issue. As a workaround, on suspension, delete the user's API keys via `DELETE /api/v2/users/{user}/keys`.
Weakness: CWE-863
Which versions are affected by CVE-2026-55435?
8 open source packages ship an affected version, including github.com/coder/coder/v2 and github.com/coder/coder. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/coder/coder/v2 Go | From 2.30.0 | 2.32.7, 2.33.8, 2.34.2 |
github.com/coder/coder/v2 Go | From 2.30.0 | 2.32.7 |
github.com/coder/coder/v2 Go | From 2.30.0 | 2.32.7 |
github.com/coder/coder/v2 Go | From 2.33.0 | 2.33.8 |
github.com/coder/coder/v2 Go | From 2.33.0 | 2.33.8 |
github.com/coder/coder/v2 Go | From 2.34.0 | 2.34.2 |
2 more packages
github.com/coder/coder/v2 Go | From 2.34.0 | 2.34.2 |
github.com/coder/coder Go | All versions | None |
Products include Coder Coder.
How do I fix CVE-2026-55435?
Upgrade github.com/coder/coder/v2 to a fixed version for your release line: 2.32.7, 2.33.8 or 2.34.2.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-55435 being exploited?
There is no known exploitation of CVE-2026-55435 in the wild and no public exploit code.
Other vulnerabilities in coder
- CVE-2026-46354 Coder: PKCS#7 signature bypass in Azure instance identity allows unauthenticated agent token theft
- CVE-2026-55429 Coder's workspace app upsert allows cross-workspace agent rebinding via user-controlled app ID
- CVE-2026-55427 Coder vulnerable to SSH config injection via unsanitized server-supplied values in `coder config-ssh`
- CVE-2026-55428 Coder: Route hijacking through lack of validation of agent-supplied AllowedIPs in tailnet coordinator
- CVE-2024-27918 Coder's OIDC authentication allows email with partially matching domain to register
Sources
Also known as GHSA-wqxv-w64v-5wh6, GO-2026-5925.