CVE-2026-55434

Coder vulnerable to denial of service via unbounded request body in AI Bridge provider endpoints

MEDIUM
6.5
CVSS Score
Published: July 7, 2026 at 08:14 PM UTC
Updated: July 8, 2026 at 08:05 PM UTC
1 product affected across 1 vendorCoder

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.33.8v < 2.34.22.33.0 ≤ v < 2.33.82.34.0 ≤ v < 2.34.2
Affected range stops below 2.33.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.34.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (4)

x_refsource_CONFIRMPatchVendor Advisory
Source: cverecord
https://github.com/coder/coder/security/advisories/GHSA-f5vp-w269-392g
x_refsource_MISCIssue TrackingPatch
Source: cverecord
https://github.com/coder/coder/pull/26164
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/coder/coder/releases/tag/v2.33.8
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/coder/coder/releases/tag/v2.34.2

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-770

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