Vulnerability · Published Jul 7, 2026 · Assigned by GitHub_M
CVE-2026-55434Coder vulnerable to denial of service via unbounded request body in AI Bridge provider endpoints
Medium 6.5
In plain English
A medium-severity resource allocation without limits in coder from coder. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 46% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Coder allows organizations to provision remote development environments via Terraform. Starting in version 2.33.0 and prior to versions 2.33.8 and 2.34.2, AI Bridge provider handlers read request bodies with `io.ReadAll` without a maximum size so an authenticated user with AI Bridge access could send an arbitrarily large body and exhaust memory. Exploitation requires authenticated access to the AI Bridge endpoints and the impact is limited to availability (denial of service). Versions 2.33.8 and 2.34.2 patch the issue. No known workarounds are available.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/coder/coder | no fix listed | GO-2026-5921 |
| Go | github.com/coder/coder/v2 | 2.34.2 | GHSA-f5vp-w269-392g |
| Go | github.com/coder/coder/v2 | 2.33.8 | GHSA-f5vp-w269-392g |
| Go | github.com/coder/coder/v2 | 2.33.8, 2.34.2 | GO-2026-5921 |
Affected products (as reported)
Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/coder/coder/security/advisories/GHSA-f5vp-w269-392g x_refsource_CONFIRM
- https://github.com/coder/coder/pull/26164 x_refsource_MISC
- https://github.com/coder/coder/releases/tag/v2.33.8 x_refsource_MISC
- https://github.com/coder/coder/releases/tag/v2.34.2 x_refsource_MISC