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CVE-2026-44351 fast-jwt: Empty HMAC secret accepted via async key resolver - JWT auth bypass

🗓️ 13 May 2026 19:12:33Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 68 Views

Critical fast-jwt flaw allows forging JWTs when key resolver returns empty string.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-44351
13 May 202619:12
–attackerkb
circl
Circl
CVE-2026-44351
29 Apr 202611:07
–circl
cnnvd
CNNVD
Fast-JWT authorization issue vulnerability
13 May 202600:00
–cnnvd
cve
CVE
CVE-2026-44351
13 May 202619:12
–cve
githubexploit
GithubExploit
Exploit for CVE-2026-44351
15 Sep 202600:58
–githubexploit
github
Github Security Blog
ruby-jwt: Empty-key HMAC bypass; cross-language sibling of CVE-2026-44351
18 May 202617:24
–github
github
Github Security Blog
fast-jwt: JWT auth bypass due to empty HMAC secret accepted by async key resolver
6 May 202622:26
–github
kitploit
Kitploit
CVE-2026-44351-poc
23 Oct 202608:30
–kitploit
mend
Mend
CVE-2026-44351
13 May 202619:12
–mend
nvd
NVD
CVE-2026-44351
13 May 202620:16
–nvd
Rows per page
[
  {
    "vendor": "nearform",
    "product": "fast-jwt",
    "versions": [
      {
        "version": "< 6.2.4",
        "status": "affected"
      }
    ]
  }
]

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