ALPINE-CVE-2026-87866

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Source
https://security.alpinelinux.org/vuln/CVE-2026-87866
Import Source
https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-87866.json
JSON Data
https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-87866
Upstream
  • CVE-2026-87866
Published
2026-10-20T21:17:20Z
Modified
2026-10-25T16:30:03Z
Summary
[none]
Details

When built with wolfSSL, curl can successfully validate a pinned public key hash against a key the TLS peer does not possess. During the TLS handshake, wolfSSL validates the connection, but curl's subsequent re-parsing of the same certificate - tricked by a manipulated validity length field - extracts and matches a different embedded key, incorrectly authorizing the pinned public key.

References

Affected packages

Alpine:v3.23 / curl

Package

Name
curl
Purl
pkg:apk/alpine/curl?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
8.23.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-87866.json"

Alpine:v3.24 / curl

Package

Name
curl
Purl
pkg:apk/alpine/curl?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
8.23.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-87866.json"