CVSS 3.1
5.4 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:NCVE-2026-55432
Medium (5.4) in coder coder. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in github.com/coder/coder/v2 2.29.17, 2.32.7, 2.33.8.
Coder allows organizations to provision remote development environments via Terraform. Prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2, the `CreateSubAgent` RPC did not validate a requested app sharing level against the template's `MaxPortSharingLevel` before persisting workspace apps, letting a workspace owner exceed the administrator's configured maximum. Exploitation requires the ability to register sub-agent apps in a workspace the attacker controls. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2clamps the sub-agent app sharing level to the template's `MaxPortSharingLevel`. As a workaround, disable wildcard app hostnames (`CODER_WILDCARD_ACCESS_URL`) to block subdomain-based app routing.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 24% of CVEs (scores of 2026-10-31)
- CWE
- CWE-862
- Published
- Modified
- Record from
- the NVD, synced
Affected
- coder:coder
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-x9qq-2qh5-8rxf | Go | github.com/coder/coder/v2 | >=2.34.0 <2.34.2 | 2.34.2 |
| GHSA-x9qq-2qh5-8rxf | Go | github.com/coder/coder/v2 | >=2.33.0 <2.33.8 | 2.33.8 |
| GHSA-x9qq-2qh5-8rxf | Go | github.com/coder/coder/v2 | >=2.30.0 <2.32.7 | 2.32.7 |
| GHSA-x9qq-2qh5-8rxf | Go | github.com/coder/coder/v2 | <2.29.17 | 2.29.17 |
| GO-2026-5926 | Go | github.com/coder/coder | all versions | no fix published |
| GO-2026-5926 | Go | github.com/coder/coder/v2 | <2.29.17 >=2.30.0 <2.32.7 >=2.33.0 <2.33.8 >=2.34.0 <2.34.2 | 2.29.17, 2.32.7, 2.33.8, 2.34.2 |