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…
- 9.8CriticalCVSS base score
- 8.4%Exploitation in 30 daysEPSS · top 5.0% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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).
Timeline
ID reserved
By hackerone
- 7 months later
· 7 months later
Published
- 6 years later
· 6 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
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)
- 8.4% · top 5.0% of all CVEs (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
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)
- EUVD EUVD-2018-0569 (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://cveledger.app/cve/CVE-2015-9235)Record last updated .