RHSA-2026:13839 — Security Advisory
Red Hat Security Advisory: nginx security update
Severity
ImportantRed Hat Product Security
Products
Official CSAF product identity
Published · May 6, 2026
Updated · November 4, 2026
Topic
An update for nginx is now available for Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Description
nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage.
Security Fix(es):
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nginx: NGINX: Denial of Service or Code Execution via specially crafted MP4 files (CVE-2026-32647)
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NGINX: NGINX: Denial of Service or file modification via buffer overflow in ngx_http_dav_module (CVE-2026-27654)
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NGINX: NGINX: Denial of Service due to memory corruption via crafted MP4 file (CVE-2026-27784)
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NGINX: NGINX: Denial of Service via undisclosed requests when ngx_mail_auth_http_module is enabled (CVE-2026-27651)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.