ALPINE-CVE-2026-56434
- Source
- https://security.alpinelinux.org/vuln/CVE-2026-56434
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-56434.json
- JSON Data
- https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-56434
- Upstream
- Published
- 2026-07-15T15:16:45.700Z
- Modified
- 2026-07-20T21:30:06.587873684Z
- Severity
-
- 8.3 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/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 CVSS Calculator
- Summary
- [none]
- Details
-
NGINX Plus and NGINX Open Source have a vulnerability in the ngxhttpssimodule module. This vulnerability may exist when the Server-Side Includes (SSI), proxypass, and proxy_buffering off directives are configured. With this configuration, an unauthenticated attacker with man-in-the-middle (MITM) ability to control responses from an upstream server may be able to cause a use-after-free in the NGINX worker process. This issue may lead to limited modification of memory or a restart of the NGINX worker process.
Impact: This vulnerability may allow remote attackers to have limited control to modify memory contents or restart the NGINX worker process. 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.
- References
Affected packages
Alpine:v3.21 / nginx
Package
- Name
- nginx
- Purl
- pkg:apk/alpine/nginx?arch=source
Alpine:v3.22 / nginx
Package
- Name
- nginx
- Purl
- pkg:apk/alpine/nginx?arch=source
Alpine:v3.23 / nginx
Package
- Name
- nginx
- Purl
- pkg:apk/alpine/nginx?arch=source