CVE-2026-109461 json
Microsoft Authentication Library (MSAL) for Node.js Information Disclosure Vulnerability
published 2026-10-16 23 d ago modified 2026-10-31 8 d ago also GHSA-xcx6-jx8p-x3h5 , EUVD-2026-102952
- cvss
- 5.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 30%
- public exploits
- 0
- none known
Summary
Origin validation error in Microsoft Authentication Library (MSAL) for Node.js allows an unauthorized attacker to disclose information over a network.
Patch / fix
- npm @azure/msal-node 7.1.0
- Microsoft Microsoft Identity Client for NodeJS 7.1.0
- github.com/AzureAD/microsoft-authentication-library-for-js@f550958 commit
- github.com/AzureAD/microsoft-authentication-library-for-js#8901 pull request
- github.com/AzureAD/microsoft-authentication-library-for-js/releases/t… release
- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-109461 advisory
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 23 d ago
Exploit prediction
0.36% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C |
| CNA | 3.1 | 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | @azure/msal-node | >=5.0.0-beta.0, <7.1.0 |
7.1.0 |
Affected products
- Microsoft Microsoft Identity Client for NodeJS
Classification
- Weakness
-
- CWE-346 Origin Validation Error
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2026-109461
vendor-advisory, patch, web
-
github.com
/AzureAD/microsoft-authentication-library-for-js/pull/8901
web
-
github.com
/AzureAD/microsoft-authentication-library-for-js/commit/f550958586475dbfeb1cd44be14a2d653728850e
web
-
github.com
/AzureAD/microsoft-authentication-library-for-js/security/advisories/GHSA-xcx6-jx8p-x3h5
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-109461
advisory
-
github.com
/AzureAD/microsoft-authentication-library-for-js
package
-
github.com
/AzureAD/microsoft-authentication-library-for-js/releases/tag/msal-node-v7.1.0
web
Sources
- CVE List CVE-2026-109461
- GitHub Advisory GHSA-xcx6-jx8p-x3h5
- NVD CVE-2026-109461
Fencer Vulns 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.