CVE-2026-27651 (GCVE-0-2026-27651)
Vulnerability from cvelistv5
Published
2026-03-24 14:13
Modified
2026-03-24 15:14
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.7 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CWE
  • CWE-476 - NULL Pointer Dereference
Summary
When the ngx_mail_auth_http_module module is enabled on NGINX Plus or NGINX Open Source, undisclosed requests can cause worker processes to terminate. This issue may occur when (1) CRAM-MD5 or APOP authentication is enabled, and (2) the authentication server permits retry by returning the Auth-Wait response header. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
References
Impacted products
Vendor Product Version
F5 NGINX Open Source Version: 1.29.0   ≤
Version: 0.5.15   ≤
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   F5 NGINX Plus Version: R36   < R36 P3
Version: R35   < R35 P2
Version: R34   < *
Version: R33   < *
Version: R32   < R32 P5
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