cvedb.io
CVE-2026-27651
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2026-03-24T15:16:32.910 · Last modified 2026-06-30T03:17:56.817

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.

Affected products

f5 — nginx_open_source

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.