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TI-2026-61477 Aliases CVE-2026-90439GHSA-fjgw-pmcm-g7j7

NGINX ngx_http_v3_module vulnerability

Priority LOW 36CWE-122Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · Low · Low
Fix status
Partial Red Hat: 1 fixed, 1 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.

Summary

NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_v3_module module. When using HTTP/3 with OpenSSL versions <= OpenSSL 3.5.0 under certain configurations, a limited heap buffer overflow could happen while processing a TLS handshake. This can happen in a non-deterministic manner that is beyond the attacker's control. This may cause a heap buffer overflow in the NGINX worker process leading to a restart and/or limited data corruption. Impact: This vulnerability may allow remote attackers to cause a denial-of-service (DoS) on the NGINX system or limited data corruption. 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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00256 17th percentileScored 2026-11-07
Fix Partial NGINX Plus (F5): 37.1.1.2, 37.0.6.2NGINX Open Source (F5): 1.31.6, 1.30.5Red Hat: 1 advisoryRed Hat: 1 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
F5NGINX Plus37.1.0.1 to before 37.1.1.2; 37.0.0.1 to before 37.0.6.237.1.1.2, 37.0.6.2Patch availableCNA
F5NGINX Open Source1.29.2 to before 1.31.6; 1.30.4 to before 1.30.51.31.6, 1.30.5Patch availableCNA
  • NGINX Plus VendorF5 Affected 37.1.0.1 to before 37.1.1.2; 37.0.0.1 to before 37.0.6.2 Fixed in 37.1.1.2, 37.0.6.2 Patch available CNA
  • NGINX Open Source VendorF5 Affected 1.29.2 to before 1.31.6; 1.30.4 to before 1.30.5 Fixed in 1.31.6, 1.30.5 Patch available CNA

Remediation

  • Fix · CNA NGINX Plus (F5) Fixed in 37.1.1.2, 37.0.6.2
  • Fix · CNA NGINX Open Source (F5) Fixed in 1.31.6, 1.30.5

Red Hat 1 advisory

  • RHSA-2026:67977 Released 2026-09-16 · Red Hat rating Moderate
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images nginx-2:1.30.5-4.hum1@aarch64, nginx-2:1.30.5-4.hum1@src, nginx-2:1.30.5-4.hum1@x86_64 +22

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat OpenShift Container Platform 4AffectedNo fix yet: Fix deferred
Red Hat Hardened ImagesFixed RHSA-2026:67977
Not affected: 1 product
  • Red Hat Hardened Images

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-90439
  2. 2026-10-03 Alias added: GHSA-fjgw-pmcm-g7j7

References

Advisory 1

  • TI-2023-25230 BIG-IP Configuration utility unauthenticated remote code execution vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-01269 Missing authentication in F5 BIG-IP KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-05850 Memory corruption in BIG-IP KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-05845 Server-side request forgery in BIG-IP; BIG-IQ KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-04820 Path traversal in BIG-IP KEVCVSS 3.1CRITICAL 9.8
  • TI-2014-05975 GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed… KEVCVSS 3.1CRITICAL 9.8
See all 1057 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences