CVE-2026-84321 (GCVE-0-2026-84321)

Vulnerability from cvelistv5 – Published: 2026-10-12 20:49 – Updated: 2026-10-13 15:50
VLAI
Title
Nginx UI: Standalone short tokens survive administrative revocation in cache and authenticate again after account re-enable
Summary
Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, GenerateShortToken creates standalone short-token records without a long Token value, but DeleteUserTokens invalidates cached entries only when the long Token field is nonempty. A revoked short token can therefore remain in the short_token cache and authenticate again if the associated account is re-enabled before the cache entry expires because GetTokenUserByShortToken reads the surviving entry, restoring access to HTTP or WebSocket routes that accept short-token authentication. This issue is fixed in version 2.4.1.
Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 15:47 UTC
CWE
  • CWE-613 - Insufficient Session Expiration
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7661 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
0xJacky nginx-ui Affected: < 2.4.1
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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