Red Hat Fixes NGINX Vulnerabilities on RHEL 9.2 E4S
Tech GuruQuick Answer
The NGINX erratum addresses five vulnerabilities involving rewrite, HTTP/2 and slice processing, including potential code execution, disclosure and denial of service. Match installed packages and support entitlements to the errata, apply the supported fixes, validate service operation, and retain evidence.
Confirm Scope And Apply The Supported Remediation
What to do now: Identify NGINX instances, package epochs and builds, enabled modules, HTTP/2 listeners, rewrite and slice configuration, upstreams and maintenance owners. Match product, architecture, package epoch/version/release and support stream to the individual erratum; apply each CVE only where its documented prerequisites hold. Install nginx-1:1.20.1-14.el9_2.7 from the entitled repository and replace old workers through the supported service procedure. Validate configuration, active worker builds, TLS, HTTP/2, proxying, rewrites and response caching; retain package and traffic-test evidence.
Last verified: 2026-11-02 UTC. Recheck the authoritative advisory and supported distribution channel before changing production.
Scope And Authority
| Product scope | NGINX on RHEL 9.2 AppStream E4S |
|---|---|
| Advisory | RHSA-2026:93472 |
| CVEs | CVE-2026-42055, CVE-2026-42533, CVE-2026-56434, CVE-2026-60005, CVE-2026-9256 |
| Authoritative release date | 2026-11-02T03:38:56Z (latest release in this group; individual release dates below) |
| Authority revision date | 2026-11-02T03:39:38Z (latest authority revision in this group) |
| Affected versions | Advisory-listed packages before the corresponding fixed builds on Red Hat Enterprise Linux AppStream E4S (v.9.2). |
| Fixed version | nginx-1:1.20.1-14.el9_2.7.src |
| CVSS base score | 6.5-8.2 (CVSS v3.1; CVE-specific) |
| CVSS severity | Medium to High |
| Exploitation status | The cited Red Hat advisories do not state that these issues are being maliciously exploited.; no exploitation claim is inferred. |
Authority-Specific Scope And Version Evidence
| RHSA-2026:93472 | Released 2026-11-02T03:38:56Z; revised 2026-11-02T03:39:38Z. Red Hat Enterprise Linux AppStream E4S (v.9.2). Fixed source package families: nginx-1:1.20.1-14.el9_2.7.src. CVSS: 6.5-8.2 (CVSS v3.1; CVE-specific); Medium to High. Vendor rating: Important. |
|---|
What Changed
The NGINX erratum addresses five vulnerabilities involving rewrite, HTTP/2 and slice processing, including potential code execution, disclosure and denial of service.
What To Validate Now
- Inventory. Identify NGINX instances, package epochs and builds, enabled modules, HTTP/2 listeners, rewrite and slice configuration, upstreams and maintenance owners.
- Establish applicability. Match product, architecture, package epoch/version/release and support stream to the individual erratum; apply each CVE only where its documented prerequisites hold.
- Remediate. Install nginx-1:1.20.1-14.el9_2.7 from the entitled repository and replace old workers through the supported service procedure.
- Validate. Validate configuration, active worker builds, TLS, HTTP/2, proxying, rewrites and response caching; retain package and traffic-test evidence.
- Retain evidence. Preserve asset and owner identifiers, the applicability decision, before-and-after versions, change approval, installation output, validation results, and any exception or rollback record.
Operational Cautions
An upstream version string alone does not establish exposure to a backported Red Hat fix. Stage changes on traffic-serving proxies. CVSS values are the authority-provided per-CVE scores, not a score for the whole update. Retain the advisory, inventory, approval, package and validation records.
Evidence To Retain
- Exact product, release stream, package or application version, enabled feature, environment, and accountable owner.
- UTC timestamps, authority revision, approved change record, installer or package-manager output, and resulting version.
- Relevant logs and monitoring evidence, test results, exceptions, compensating controls, and rollback decisions.
Related TechGeeks Resources
Authoritative References
Correction policy: If the authority changes affected versions, fixed versions, severity, exploitation information, mitigations, or required action, TechGeeks will update this notice and its verification date.
