ALPINE-CVE-2026-58050
- Source
- https://security.alpinelinux.org/vuln/CVE-2026-58050
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-58050.json
- JSON Data
- https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-58050
- Upstream
- Published
- 2026-06-28T02:16:32Z
- Modified
- 2026-10-21T08:30:02Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
libssh2 through 1.11.1 reads an attacker-controlled 32-bit attribute count from a publickey-subsystem response and uses it in the allocation num_attrs * sizeof(libssh2_publickey_attribute) without bounds checking, so on 32-bit platforms the multiplication overflows to an undersized buffer. A malicious SSH server can then drive the attribute-parsing loop to write past the allocation, causing a heap buffer overflow in a connecting libssh2 client.
- References
Affected packages
Alpine:v3.21 / libssh2
Package
- Name
- libssh2
- Purl
- pkg:apk/alpine/libssh2?arch=source
Alpine:v3.22 / libssh2
Package
- Name
- libssh2
- Purl
- pkg:apk/alpine/libssh2?arch=source
Alpine:v3.23 / libssh2
Package
- Name
- libssh2
- Purl
- pkg:apk/alpine/libssh2?arch=source