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URL: https://nvd.nist.gov/vuln/detail/CVE-2015-9235

⇱ NVD - CVE-2015-9235

  1. Vulnerabilities

CVE-2015-9235 Detail

Modified After Enrichment

This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.

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).


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/ CVE, HackerOne Broken Link  Vendor Advisory 
https://github.com/auth0/node-jsonwebtoken/commit/1bb584bc382295eeb7ee8c4452a673a77a68b687 CVE, HackerOne Patch  Third Party Advisory 
https://nodesecurity.io/advisories/17 CVE, HackerOne Third Party Advisory 
https://www.timmclean.net/2015/02/25/jwt-alg-none.html CVE, HackerOne Exploit  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-327 Use of a Broken or Risky Cryptographic Algorithm 👁 cwe source acceptance level
NIST  
CWE-20 Improper Input Validation HackerOne  

Known Affected Software Configurations Switch to CPE 2.2

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Denotes Vulnerable Software
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Change History

6 change records found show changes

CVE Modified by HackerOne 6/16/2026 8:36:06 PM

Action Type Old Value New Value
Added Affected 
[{"vendor":"HackerOne","product":"jsonwebtoken node module","versions":[{"version":"<4.2.2","status":"affected"}]}]

CVE Modified by CVE 11/20/2024 9:40:07 PM

Action Type Old Value New Value
Added Reference 
https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/
Added Reference 
https://github.com/auth0/node-jsonwebtoken/commit/1bb584bc382295eeb7ee8c4452a673a77a68b687
Added Reference 
https://nodesecurity.io/advisories/17
Added Reference 
https://www.timmclean.net/2015/02/25/jwt-alg-none.html

CVE Modified by HackerOne 5/13/2024 11:45:50 PM

Action Type Old Value New Value

CVE Modified by HackerOne 10/09/2019 7:15:57 PM

Action Type Old Value New Value
Added CWE 
HackerOne CWE-20

Initial Analysis by NIST 7/09/2018 7:42:21 AM

Action Type Old Value New Value
Added CVSS V3 
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Added CVSS V2 
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Added CWE 
CWE-327
Added CPE Configuration 
OR
 *cpe:2.3:a:auth0:jsonwebtoken:*:*:*:*:*:node.js:*:* versions up to (excluding) 4.2.2
Changed Reference Type 
https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/ No Types Assigned


 
https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/ Broken Link, Vendor Advisory
Changed Reference Type 
https://github.com/auth0/node-jsonwebtoken/commit/1bb584bc382295eeb7ee8c4452a673a77a68b687 No Types Assigned


 
https://github.com/auth0/node-jsonwebtoken/commit/1bb584bc382295eeb7ee8c4452a673a77a68b687 Patch, Third Party Advisory
Changed Reference Type 
https://nodesecurity.io/advisories/17 No Types Assigned


 
https://nodesecurity.io/advisories/17 Third Party Advisory
Changed Reference Type 
https://www.timmclean.net/2015/02/25/jwt-alg-none.html No Types Assigned


 
https://www.timmclean.net/2015/02/25/jwt-alg-none.html Exploit, Third Party Advisory

CVE Modified by HackerOne 5/30/2018 9:29:00 PM

Action Type Old Value New Value
Changed 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 asymetric key (RS/ES family) of algorithms but instead the attacker send a token digitally signed with a symmetric algorithm (HS* family)


 
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).

Quick Info

CVE Dictionary Entry:
CVE-2015-9235
NVD Published Date:
05/29/2018
NVD Last Modified:
06/16/2026
Source:
HackerOne