ALPINE-CVE-2026-55200

See a problem?
Please try reporting it to the source first.
Source
https://security.alpinelinux.org/vuln/CVE-2026-55200
Import Source
https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-55200.json
JSON Data
https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-55200
Upstream
Published
2026-06-17T20:17:28Z
Modified
2026-08-27T22:18:03Z
Severity
  • 8.3 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L CVSS Calculator
Summary
[none]
Details

libssh2 through 1.11.1, fixed in commit 7acf3df contains an out-of-bounds write vulnerability in ssh2_transport_read() that fails to enforce upper bounds on packet_length field. Remote attackers can send crafted SSH packets with excessively large packet_length values to corrupt heap memory and achieve remote code execution.

References

Affected packages

Alpine:v3.21 / libssh2

Package

Name
libssh2
Purl
pkg:apk/alpine/libssh2?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.11.1-r2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-55200.json"

Alpine:v3.22 / libssh2

Package

Name
libssh2
Purl
pkg:apk/alpine/libssh2?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.11.1-r2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-55200.json"

Alpine:v3.23 / libssh2

Package

Name
libssh2
Purl
pkg:apk/alpine/libssh2?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.11.1-r3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-55200.json"

Alpine:v3.24 / libssh2

Package

Name
libssh2
Purl
pkg:apk/alpine/libssh2?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.11.1-r3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-55200.json"

Alpine:v3.24 / rust

Package

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

Affected ranges

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

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-55200.json"