https://seclists.org/oss-sec/2026/q2/1017: libssh2: CVE-2026-55200 (critical), CVE-2025-15661 (high), CVE-2026-55199 (high)
Published Jun 24, 2026
·Updated
Affected Software
1 affected component
libssh2 libssh2
Frequently Asked Questions
1
What is the severity of CVE-2026-55200?
CVE-2026-55200 is categorized as a critical severity vulnerability.
2
How do I fix CVE-2026-55200?
To fix CVE-2026-55200, you should update to the latest version of libssh2 that addresses this vulnerability.
3
What are the potential impacts of CVE-2026-55200?
CVE-2026-55200 could lead to severe security breaches if exploited, potentially allowing unauthorized access.
4
Are there any workarounds for CVE-2026-55200?
As of now, update to the patched version of libssh2, as there are no recommended workarounds for CVE-2026-55200.
5
What other vulnerabilities are associated with libssh2 along with CVE-2026-55200?
Along with CVE-2026-55200, libssh2 also has CVE-2025-15661 and CVE-2026-55199 which are classified as high severity.