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Advisory severityCritical9.2F5 Updated

Critical [CVE-2026-97205] NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_core_module module

This critical-severity F5 advisory covers CVE-2026-97205 affecting NGINX Plus, NGINX Open Source.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-97205 Source published Source updated

VulniPulse record published Record updated

CVE-2026-97205
Affected products & platforms
F5NGINX
Open source advisory

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Summary

NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_core_module module. When asynchronous file I/O (AIO) is enabled in certain configurations, processing a Server Side Includes (SSI) page containing “include virtual” commands may trigger a Use-After-Free (UAF) in the NGINX worker process.

This may cause memory corruption or a worker process crash. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR.

Impact: This vulnerability may allow remote attackers to cause a denial-of-service (DoS) on the NGINX system, corrupt its memory, or possibly trigger code execution.

There is no control plane exposure; this is a data plane issue only.

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

Affected versions
  • NGINX Plus 37.1.0 before 37.1.0.1
  • NGINX Plus 37.0.0 before 37.0.5.1
  • NGINX Plus R36
  • NGINX Plus R35
  • NGINX Plus R34
  • NGINX Plus R33
  • NGINX Open Source 1.31.0 before 1.31.7
  • NGINX Open Source 1.30.0 before 1.30.6

Official advisory · high-confidence parse· fetched 7 days ago·verify at source

Fixed versions
  • 37.1.0.1
  • 37.0.5.1
  • 1.31.7
  • 1.30.6

Official advisory · high-confidence parse· fetched 7 days ago·verify at source

Mitigation

Upgrade to a fixed release: 37.1.0.1, 37.0.5.1, 1.31.7, 1.30.6. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 7 days ago·verify at source

Discussion(0)

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