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CVE search · CVE-2026-40701

CVE-2026-40701

medium 6.3

NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_ssl_module module when the ssl_verify_client directive is set to "on" or "optional," and the ssl_ocsp directive is set to "on" or the leaf parameters are configured with a resolver. With this configuration, an unauthenticated attacker can send requests along with conditions beyond its control that may cause a heap-use-after-free error in the NGINX worker process. This vulnerability may result in limited modification of data or the NGINX worker process restarting.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Open in the NVD CVE.org JSON

Details

Status
Analyzed
Published
Last changed
Source
f5sirt@f5.com
Weakness
CWE-416

Severity

VersionScoreVectorSource
CVSS 4.0 medium 6.3 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X f5sirt@f5.comSecondary
CVSS 3.1 medium 4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L f5sirt@f5.comSecondary

Affected products

Vendor and product from the NVD’s CPE applicability statements. Versions and conditions are on the NVD’s page.

  • f5 · dos
  • f5 · nginx_gateway_fabric
  • f5 · nginx_ingress_controller
  • f5 · nginx_instance_manager
  • f5 · nginx_open_source
  • f5 · nginx_plus
  • f5 · waf

References