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CVE-2015-9235
In jsonwebtoken node module before 4.2.2 it is possible for an attacker to bypass verification when a token digitally signed with an…
Critical9.8EPSS 8.5%
- Published
- Updated
- Reserved
- Assigned by
- hackerone
Description
In jsonwebtoken node module before 4.2.2 it is possible for an attacker to bypass verification when a token digitally signed with an asymmetric key (RS/ES family) of algorithms but instead the attacker send a token digitally signed with a symmetric algorithm (HS* family).
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Critical9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 8.5% · top 4.9% of all CVEs (3 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
Affected products
HackerOne · jsonwebtoken node module
- affected <4.2.2
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- npmjsonwebtokenGHSA-c7hr-j4mj-j2w6 (opens in a new tab)
References (4)
- https://nodesecurity.io/advisories/17 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/auth0/node-jsonwebtoken/commit/1bb584bc382295eeb7ee8c4452a673a77a68b687 (opens in a new tab)x_refsource_MISCx_transferred
- https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/ (opens in a new tab)x_refsource_MISCx_transferred
- https://www.timmclean.net/2015/02/25/jwt-alg-none.html (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-c7hr-j4mj-j2w6 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2015-9235)Record last updated .