CVE-2026-126404 json
Coder from 2.38.0 before 2.38.4 Privilege Escalation via API Key Creation
published 17d ago modified yesterday also EUVD-2026-125161 , GHSA-x3gf-xv6p-56hf
Unreviewed: the maintainers' own advisory
Published by the maintainers on their GitHub repository coder/coder. GitHub has not reviewed it into the GitHub Advisory Database, so the affected packages and versions are the maintainers' word. Read the full advisory on GitHub.
- cvss
- 6.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 21%
- public exploits
- 0
- none known
Summary
Coder 2.28.0 before 2.29.24, 2.30.0 before 2.34.16, 2.35.0 before 2.36.11, 2.37.0 before 2.37.8, and 2.38.0 before 2.38.4 does not restrict new API keys to the creating token's scopes, allow list, or expiry. A scoped API key or OAuth2 token holding key-creation permission can call POST /api/v2/users/{user}/keys/tokens to mint longer-lived coder:all keys, gaining the user's full privileges.
Patch / fix
- coder coder 2.29.24, 2.34.16, 2.36.0, 2.36.11, 2.37.8, 2.38.4
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- yesterday
Exploit prediction
0.28% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-14).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.6 | CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N |
| CNA | 3.1 | 6.8 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N |
| CNA | 4.0 | 7.6 | CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/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 |
Affected products
- coder coder
Classification
- Weakness
-
- CWE-266 Incorrect Privilege Assignment
References
-
github.com
/coder/coder/security/advisories/GHSA-x3gf-xv6p-56hf
vendor-advisory, advisory
-
vulncheck.com
/advisories/coder-from-2.38.0-before-2.38.4-privilege-escalation-via-api-key-creation
third-party-advisory
Sources
- CVE List CVE-2026-126404
- NVD CVE-2026-126404
- Maintainer advisory GHSA-x3gf-xv6p-56hf
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
The maintainers of coder/coder published their own advisory on GitHub. Reviewed sources take precedence over it.