NGINX ngx_mail_auth_http_module vulnerability
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.9%
exploitation probability
0.9%top 43% of all CVEs
observed exploitation
nono source reports it
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.
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
References
https://access.redhat.com/errata/RHSA-2026:10065https://access.redhat.com/errata/RHSA-2026:13634https://access.redhat.com/errata/RHSA-2026:13680https://access.redhat.com/errata/RHSA-2026:13839https://access.redhat.com/errata/RHSA-2026:14836https://access.redhat.com/errata/RHSA-2026:15942https://access.redhat.com/errata/RHSA-2026:15943https://access.redhat.com/errata/RHSA-2026:15945https://access.redhat.com/errata/RHSA-2026:15966https://access.redhat.com/errata/RHSA-2026:6906https://access.redhat.com/errata/RHSA-2026:6907https://access.redhat.com/errata/RHSA-2026:6923