Red Hat Security Advisory: nginx security update
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): * nginx: NGINX: Denial of Service or Code Execution via specially crafted MP4 files (CVE-2026-32647) * NGINX: NGINX: Denial of Service or file modification via buffer overflow in ngx_http_dav_module (CVE-2026-27654) * NGINX: NGINX: Denial of Service due to memory corruption via crafted MP4 file (CVE-2026-27784) * 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.
AI Analysis
Technical Summary
Red Hat Product Security released an advisory (RHSA-2026:6906) addressing four vulnerabilities in nginx: CVE-2026-32647 allows denial of service or code execution via crafted MP4 files; CVE-2026-27654 involves denial of service or file modification through a buffer overflow in the ngx_http_dav_module; CVE-2026-27784 causes denial of service due to memory corruption from crafted MP4 files; and CVE-2026-27651 results in denial of service when the ngx_mail_auth_http_module is enabled. These vulnerabilities affect nginx versions as packaged in Red Hat Enterprise Linux 10 and related products. The advisory provides updated packages to remediate these issues.
Potential Impact
The vulnerabilities can lead to denial of service conditions and, in one case, potential code execution, which could disrupt web and proxy services relying on nginx. The buffer overflow and memory corruption issues may also allow unauthorized file modification or service crashes. These impacts could affect availability and integrity of affected systems running vulnerable nginx versions.
Mitigation Recommendations
Red Hat has released updated nginx packages as part of Red Hat Enterprise Linux 10 updates to address these vulnerabilities. Users should apply the official security updates provided by Red Hat as detailed in advisory RHSA-2026:6906 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying these updates.
Red Hat Security Advisory: nginx security update
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): * nginx: NGINX: Denial of Service or Code Execution via specially crafted MP4 files (CVE-2026-32647) * NGINX: NGINX: Denial of Service or file modification via buffer overflow in ngx_http_dav_module (CVE-2026-27654) * NGINX: NGINX: Denial of Service due to memory corruption via crafted MP4 file (CVE-2026-27784) * 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.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Red Hat Product Security released an advisory (RHSA-2026:6906) addressing four vulnerabilities in nginx: CVE-2026-32647 allows denial of service or code execution via crafted MP4 files; CVE-2026-27654 involves denial of service or file modification through a buffer overflow in the ngx_http_dav_module; CVE-2026-27784 causes denial of service due to memory corruption from crafted MP4 files; and CVE-2026-27651 results in denial of service when the ngx_mail_auth_http_module is enabled. These vulnerabilities affect nginx versions as packaged in Red Hat Enterprise Linux 10 and related products. The advisory provides updated packages to remediate these issues.
Potential Impact
The vulnerabilities can lead to denial of service conditions and, in one case, potential code execution, which could disrupt web and proxy services relying on nginx. The buffer overflow and memory corruption issues may also allow unauthorized file modification or service crashes. These impacts could affect availability and integrity of affected systems running vulnerable nginx versions.
Mitigation Recommendations
Red Hat has released updated nginx packages as part of Red Hat Enterprise Linux 10 updates to address these vulnerabilities. Users should apply the official security updates provided by Red Hat as detailed in advisory RHSA-2026:6906 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying these updates.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:6906
- Cve Count
- 4
- Additional Cves
- ["CVE-2026-27654","CVE-2026-27784","CVE-2026-32647"]
- Cvss Version
- null
Threat ID: 6a3da1bf4853345fc181c362
Added to database: 06/25/2026, 21:46:39 UTC
Last enriched: 06/25/2026, 21:51:24 UTC
Last updated: 07/31/2026, 19:24:46 UTC
Views: 34
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.