Integer Overflow or Wraparound Affecting nginx-mod-mail package, versions <2:1.26.3-2.0.1.el10_1.1


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
1.03% (60th percentile)

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  • Snyk IDSNYK-ORACLE10-NGINXMODMAIL-15980041
  • published11 Apr 2026
  • disclosed24 Mar 2026

Introduced: 24 Mar 2026

CVE-2026-27784  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Oracle:10 nginx-mod-mail to version 2:1.26.3-2.0.1.el10_1.1 or higher.
This issue was patched in ELSA-2026-6906.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nginx-mod-mail package and not the nginx-mod-mail package as distributed by Oracle. See How to fix? for Oracle:10 relevant fixed versions and status.

The 32-bit implementation of NGINX Open Source has a vulnerability in the ngx_http_mp4_module module, which might allow an attacker to over-read or over-write NGINX worker memory resulting in its termination, using a specially crafted MP4 file. The issue only affects 32-bit NGINX Open Source if it is built with the ngx_http_mp4_module module and the mp4 directive is used in the configuration file. Additionally, the attack is possible only if an attacker can trigger the processing of a specially crafted MP4 file with the ngx_http_mp4_module module.

Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVSS Base Scores

version 3.1