CVE-2026-121967

Coder before 2.29.22, 2.34.13, 2.35.10, 2.36.8, 2.37.5, and 2.38.1 AI Gateway Path Traversal

CVSS score

2.3

EPSS probability

—

Risk score

0.2

Published

3 h ago

Overview Public Exploits (0)Newsroom Vulnerability Timeline

Official patch verified

Etkilenen ürün ve sürüm için yayımlanan güvenlik güncellemesini uygulayın.

Impact on My Inventory

Only the personal products you have added to your account are assessed; an organisation's inventory does not appear here.

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Vulnerability description

DayBreach AI Explanation

Verified against sources

Coder AI Gateway Path Traversal Vulnerability

Sources read

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

A path traversal vulnerability in Coder's AI Gateway passthrough router allows authenticated users to send percent-encoded dot segments under allowlisted prefixes.

Why does it matter?

Authenticated users can reach unintended provider endpoints using centrally managed provider keys, presenting low-severity security risks.

What should be done?

Update software to unaffected versions
Follow vendor advisory documentation
Review related patch references on GitHub

Chain of evidence and sources2 verified claims

Coder uygulamasının AI Gateway passthrough yönlendiricisi, yüzde kodlanmış nokta segmentlerini reddetmeden upstream iletir.

S0 · daybreach-canonical S1 · cvelist

Kimliği doğrulanmış kullanıcılar, merkezi olarak yönetilen anahtarları kullanarak istenmeyen sağlayıcı uç noktalarına erişebilir.

S0 · daybreach-canonical S1 · cvelist

Show the technical text from the sources

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.

CVSS vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

CWE: CWE-22

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-121967 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	coder	coder	View
2	coder	coder	View
3	coder	coder	View
4	coder	coder	View
5	coder	coder	View
6	coder	coder	View

Total affected vendors: 1|Products: 6

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCORE	VERSION	SEVERITY	VECTOR	SOURCE
4.9	CVSS V3_1	MEDIUM	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N	CVE CNA
4.9	CVSS V31	MEDIUM	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N	NVD
2.3	CVSS V4_0	LOW	CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N	CVE CNA
2.3	CVSS V40	LOW	CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X	NVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch verified

2 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

cvelist

GitHub Pull Request #30178

Open source

reference

GitHub Pull Request #30178

Open source

Confirm the affected product and version against the source evidence above.

Restrict access to internet-facing services and apply network segmentation.

Apply the official update named in the evidence only to the matching product and version.

Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-121967 is associated with the following CWEs:

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-121967 weaknesses.

CAPEC-66: SQL Injection CAPEC-126: Path Traversal CAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden

PermissionsLow

UserGerekmiyor

Official Sources and Advisories

GitHub Security Advisory (GHSA-373r-678h-hjc6)vendor-advisory GitHub Pull Request #30178patch VulnCheck Advisory: Coder before 2.29.22, 2.34.13, 2.35.10, 2.36.8, 2.37.5, and 2.38.1 AI Gateway Path Traversalvendor-advisory

CVSS Vector Radar Chart

2.3 / 10

Vulnerability Scoring Details

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredLow privileges

User InteractionNone required

Confidentiality (Gizlilik)High

Integrity (Bütünlük)None

Availability (Erişilebilirlik)None

Yama doğrulandı

2 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

Follow the vendor

coder

Weakness Type (CWE & CAPEC)

CWE-22

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Get this vulnerability through the API

Affected products, version ranges, exploitation status and patch information in a single request, with a free key.

Get a free key Documentation

curl -H "x-api-key: $DAYBREACH_API_KEY" \
  "https://api.daybreach.dev/api/v1/intel/cves/CVE-2026-121967"

Coder before 2.29.22, 2.34.13, 2.35.10, 2.36.8, 2.37.5, and 2.38.1 AI Gateway Path Traversal

Impact on My Inventory

Vulnerability description

DayBreach AI Explanation

Short explanation

What should be done?

IMPACT: Affected Products and Software

Affected Products

RED HAT CSAF/VEX: Product Impact Check

SCORING: CVSS from Multiple Sources

CVSS Scores

Patch and Remediation Guide

Solution & Remediation Advisory

Public exploit and active exploitation status

Verified exploit intelligence

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

Common Attack Pattern Enumeration and Classification (CAPEC)

Attack Vector and Accessibility

Official Sources and Advisories

CVSS Vector Radar Chart

Vulnerability Scoring Details

Weakness Type (CWE & CAPEC)

Similar Vulnerabilities

Get this vulnerability through the API

DayBreach

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