Coder vulnerable to denial of service via unbounded request body in AI Bridge provider endpoints
Published Jul 7, 2026
6.5
MEDIUMCVSS 3.1
EPSS 0.55%
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 products
-
- Version >= 2.33.0, < 2.33.8StatusaffectedConstraints-
- Version >= 2.34.0, < 2.34.2StatusaffectedConstraints-
- Version
No data.
No Red Hat product state for this CVE.
github.com/coder/coder/v2
Go
Introduced 2.34.0 Fixed 2.34.2github.com/coder/coder/v2
Go
Introduced 2.33.0 Fixed 2.33.8github.com/coder/coder
Go
Introduced 0 Fixed not fixed
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Go | github.com/coder/coder/v2 | 2.34.0 | 2.34.2 |
| Go | github.com/coder/coder/v2 | 2.33.0 | 2.33.8 |
| Go | github.com/coder/coder | 0 | not fixed |
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Jul 8, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
Jul–Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.55% (0.00552) | 44.13th | v5 (v2026.06.15) |
| Jul 8, 2026 | 0.55% (0.00548) | 41.93th | v5 (v2026.06.15) |
References (6)
- https://github.com/advisories/GHSA-f5vp-w269-392g Advisory
- https://github.com/coder/coder/pull/26164 x_refsource_MISCIssue TrackingPatch
- https://github.com/coder/coder/releases/tag/v2.33.8 x_refsource_MISCRelease Notes
- https://github.com/coder/coder/releases/tag/v2.34.2 x_refsource_MISCRelease Notes
- https://github.com/coder/coder/security/advisories/GHSA-f5vp-w269-392g x_refsource_CONFIRMPatchVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-55434
| Link | Providers | Tags |
|---|---|---|
| https://github.com/advisories/GHSA-f5vp-w269-392g | Advisory | |
| https://github.com/coder/coder/pull/26164 | x_refsource_MISCIssue TrackingPatch | |
| https://github.com/coder/coder/releases/tag/v2.33.8 | x_refsource_MISCRelease Notes | |
| https://github.com/coder/coder/releases/tag/v2.34.2 | x_refsource_MISCRelease Notes | |
| https://github.com/coder/coder/security/advisories/GHSA-f5vp-w269-392g | x_refsource_CONFIRMPatchVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2026-55434 |
Change history (0)
No recorded changes yet.