Vulnerabilities

Vulnerability · CVE-2026-95101

NGINX ngx_http_v3_module vulnerability

Published Oct 14, 2026 · catalog updated Oct 18, 2026 · F5 NGINX Plus

Check if you run it

No confirmed exploitation is on record for CVE-2026-95101. EPSS is 0.25%. Act only if a listed version of F5 NGINX Plus is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.25%
Remediation
Advisory link
Affected products
Debian:12 nginx · Debian:13 nginx · Debian:14 nginx · vendor F5 NGINX Open Source · vendor F5 NGINX Plus

Description NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_v3_module module. When using HTTP/3 with proxy_request_buffering on directive, an unauthenticated attacker may be able to inject data in the proxied request. Impact This vulnerability may allow remote attackers to inject data in the proxied request. 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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Debian:12 nginx1.22.1-9, 1.22.1-9+deb12u1, 1.22.1-9+deb12u10
  • Debian:13 nginx1.26.3-3, 1.26.3-3+deb13u1, 1.26.3-3+deb13u2
  • Debian:14 nginx0 → 1.30.4-8
  • vendor F5 NGINX Open Sourceversion unspecified
  • vendor F5 NGINX Plusversion unspecified

How to fix CVE-2026-95101

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-95101. EPSS is 0.25%. Act only if a listed version of F5 NGINX Plus is installed.

Which versions are affected?

Compare what you have installed with 1.22.1-9, 1.22.1-9+deb12u1, 1.22.1-9+deb12u10, 1.26.3-3, 1.26.3-3+deb13u1, 1.26.3-3+deb13u2, 0 → 1.30.4-8. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-172. EPSS 0.25%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 14, 2026 · CIRCL Vulnerability Lookup

    Detected

    Description NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_v3_module module. When using HTTP/3 with proxy_request_buffering on directive, an unauthenticated attacker may be able to inject data in the proxied request. Impact This vulnerability may allow remote attackers to inject data in the proxied request. There is no control plane exposure; this is a data plane issue only.

  2. Oct 14, 2026 · NIST NVD

    Updated

    Description NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_v3_module module. When using HTTP/3 with proxy_request_buffering on directive, an unauthenticated attacker may be able to inject data in the proxied request. Impact This vulnerability may allow remote attackers to inject data in the proxied request. There is no control plane exposure; this is a data plane issue only.

  3. Oct 15, 2026 · NIST NVD

    Updated

    Description NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_v3_module module. When using HTTP/3 with proxy_request_buffering on directive, an unauthenticated attacker may be able to inject data in the proxied request. Impact This vulnerability may allow remote attackers to inject data in the proxied request. There is no control plane exposure; this is a data plane issue only.

  4. Oct 18, 2026 · Trivy Vulnerability DB

    Fix available

    nginx fixed in 1.30.4-8

  5. Oct 18, 2026 · Trivy Vulnerability DB

    Fix available

    nginx fixed in 1.30.4-8

  6. Oct 18, 2026 · Trivy Vulnerability DB

    Updated

    Description NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_v3_module module. When using HTTP/3 with proxy_request_buffering on directive, an unauthenticated attacker may be able to inject data in the proxied request. Impact This vulnerability may allow remote attackers to inject data in the proxied request. There is no control plane exposure; this is a data plane issue only.

Sources

  • CIRCL Vulnerability LookupVulnerability recordCVE-2026-95101

    Description NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_v3_module module. When using HTTP/3 with proxy_request_buffering on directive, an unauthenticated attacker may be able to inject data in the proxied request. Impact This vulnerability may allow remo

    vulnerability.circl.lu
  • CVE.orgVulnerability recordCVE-2026-95101

    Description NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_v3_module module. When using HTTP/3 with proxy_request_buffering on directive, an unauthenticated attacker may be able to inject data in the proxied request. Impact This vulnerability may allow remo

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-95101

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-2026-95101

    Description NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_v3_module module. When using HTTP/3 with proxy_request_buffering on directive, an unauthenticated attacker may be able to inject data in the proxied request. Impact This vulnerability may allow

    nvd.nist.gov
  • OpenSSF OSV / OSV ScannerPackage advisoryDEBIAN-CVE-2026-95101
    osv.dev
  • Trivy Vulnerability DBPackage advisoryDEBIAN-CVE-2026-95101

    Description NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_v3_module module. When using HTTP/3 with proxy_request_buffering on directive, an unauthenticated attacker may be able to inject data in the proxied request. Impact This vulnerability may allow remo

    osv.dev

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.