TI-2026-85106 Aliases CVE-2026-121967 GHSA-c6h5-pw77-hjcp

Path traversal in Coder AI Gateway passthrough router

LOW 12CWE-22Published 2026-11-04 · Updated 2026-11-04

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: High
Attack requirements: Present
Impact type: —
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Coder versions from 2.28.0 before 2.29.22, 2.30.0 before 2.34.13, 2.35.0 before 2.35.10, 2.36.0 before 2.36.8, 2.37.0 before 2.37.5, and 2.38.0 before 2.38.1 are affected. The AI Gateway passthrough router forwards percent-encoded dot segments upstream without rejecting them, a path traversal flaw (CWE-22). An authenticated user can reach unintended provider endpoints under allowlisted prefixes, using the deployment's centrally managed provider key.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

Coder 2.28.0 before 2.29.22, 2.30.0 before 2.34.13, 2.35.0 before 2.35.10, 2.36.0 before 2.36.8, 2.37.0 before 2.37.5, and 2.38.0 before 2.38.1 contains a path traversal vulnerability in the AI Gateway passthrough router, which forwards percent-encoded dot segments upstream without rejecting them. Authenticated users can send paths such as %2e%2e or ..%2F under allowlisted prefixes to reach unintended provider endpoints using the deployment's centrally managed provider key.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00256 17th percentileScored 2026-11-07

Fix Fixed coder (coder): 2.37.5, 2.36.8, 2.35.10 +3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
coder	coder	2.37.0 to before 2.37.5	2.37.5	Patch available	CNA
coder	coder	2.36.0 to before 2.36.8	2.36.8	Patch available	CNA
coder	coder	2.35.0 to before 2.35.10	2.35.10	Patch available	CNA
coder	coder	2.30.0 to before 2.34.13	2.34.13	Patch available	CNA
coder	coder	2.28.0 to before 2.29.22	2.29.22	Patch available	CNA
coder	coder	2.38.0 to before 2.38.1	2.38.1	Patch available	CNA

coder Vendorcoder Affected 2.37.0 to before 2.37.5 Fixed in 2.37.5 Patch available CNA
coder Vendorcoder Affected 2.36.0 to before 2.36.8 Fixed in 2.36.8 Patch available CNA
coder Vendorcoder Affected 2.35.0 to before 2.35.10 Fixed in 2.35.10 Patch available CNA
coder Vendorcoder Affected 2.30.0 to before 2.34.13 Fixed in 2.34.13 Patch available CNA
coder Vendorcoder Affected 2.28.0 to before 2.29.22 Fixed in 2.29.22 Patch available CNA
coder Vendorcoder Affected 2.38.0 to before 2.38.1 Fixed in 2.38.1 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:coder:coder::::::::	—	—	coder

cpe:2.3:a:coder:coder:*:*:*:*:*:*:*:* Versions — — ·coder

Remediation

Upgrade Coder to 2.29.22, 2.34.13, 2.35.10, 2.36.8, 2.37.5, or 2.38.1, the fixed version for each affected release line.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Fix · CNA coder (coder) Fixed in 2.37.5
Fix · CNA coder (coder) Fixed in 2.36.8
Fix · CNA coder (coder) Fixed in 2.35.10
Fix · CNA coder (coder) Fixed in 2.34.13
Fix · CNA coder (coder) Fixed in 2.29.22
Fix · CNA coder (coder) Fixed in 2.38.1

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-11-04 Threatist record created from CVE-2026-121967
2026-11-04 CISA SSVC decision points changed
2026-11-04 Alias added: GHSA-c6h5-pw77-hjcp
2026-11-06 Affected versions changed · Red Hat
2026-11-06 CVSS score added · Red Hat

References

Patch 1

GitHub Pull Request #30178

Advisory 1

GitHub Security Advisory (GHSA-373r-678h-hjc6)

TI-2025-29799 code-server session cookie can be extracted by having user visit specially crafted proxy URL CVSS 3.1HIGH 8.3
TI-2025-37344 AgentAPI exposed user chat history via a DNS rebinding attack CVSS 3.1MEDIUM 6.5
TI-2026-34071 Coder: PKCS#7 signature bypass in Azure instance identity allows unauthenticated agent token theft CVSS 3.1CRITICAL 9.1
TI-2026-32394 Coder vulnerable to workspace auto-creation via crafted URL parameters without user consent CVSS 3.1HIGH 8.8
TI-2026-27585 Code Extension Marketplace has a Zip Slip Path Traversal CVSS 4.0HIGH 8.7
TI-2024-18523 Coder's OIDC authentication allows email with partially matching domain to register CVSS 3.1HIGH 8.2

See all 42 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences