TI-2026-76136 Aliases CVE-2026-111931 GHSA-gp67-53hr-2cf4

Open redirect in Coder via workspace app proxy

LOW 23CWE-601Published 2026-10-17 · Updated 2026-10-18

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-601.

Summary

Coder from 2.0.0 before 2.34.8 contains an open redirect in the handleAPIKeySmuggling function because it does not sanitize the r.URL.Path value. An attacker can craft links on trusted workspace app subdomains with paths beginning with double slashes, which become scheme-relative redirects to attacker sites. A user must click a crafted link, so the flaw is used for phishing (CWE-601).

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Coder from 2.0.0 before 2.34.8 contains an open redirect vulnerability in handleAPIKeySmuggling that allows attackers to redirect users externally via unsanitized r.URL.Path values. Attackers can craft links on trusted workspace app subdomains with paths beginning with double slashes, which become scheme-relative redirects to attacker sites for phishing.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00165 5th percentileScored 2026-11-07

Fix Fixed coder (coder): 2.34.8

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	2.0.0 to before 2.34.8	2.34.8	Patch available	CNA

coder Vendorcoder Affected 2.0.0 to before 2.34.8 Fixed in 2.34.8 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 version 2.34.8 or later, which fixes the flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Fix · CNA coder (coder) Fixed in 2.34.8

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-10-17
coder 2.34.8
6 records Highest priority Priority LOW 6 LOW
Other records, highest priority first
- TI-2026-76132 Hostname prefix match in Coder workspace proxy leaks API keysPriority LOW 39
- TI-2026-76134 Coder bypass exposes other organizations' Terraform module filesPriority LOW 26
- TI-2026-76135 Information disclosure in Coder workspace ACL endpointPriority LOW 23
Show all 6 records →

Timeline

2026-10-18 Threatist record created from CVE-2026-111931
2026-10-18 Alias added: GHSA-gp67-53hr-2cf4

References

Advisory 1

GitHub Security Advisory (GHSA-98qx-9p2x-c4wh)

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