CVE-2026-59849 — LOW (3.1) — White Hats Nepal

Vulnerability Description

A flaw was found in libssh. Logic errors in automatic certificate-based public key authentication can cause libssh clients to loop indefinitely when configured certificates are missing or repeatedly rejected by a server, leading to denial of service.

CVSS Score

3.1

LOW

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

LOW

Affected Products

Vendor	Product	Versions
Libssh	Libssh	-
Redhat	Hardened Images	-
Redhat	Enterprise Linux	10.0

Related Weaknesses (CWE)

CWE-835

References

https://access.redhat.com/errata/RHSA-2026:42922Issue Tracking
https://access.redhat.com/errata/RHSA-2026:55855
https://access.redhat.com/security/cve/CVE-2026-59849Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2498182Issue TrackingVendor Advisory

FAQ

What is CVE-2026-59849?

CVE-2026-59849 is a vulnerability with a CVSS score of 3.1 (LOW). A flaw was found in libssh. Logic errors in automatic certificate-based public key authentication can cause libssh clients to loop indefinitely when configured certificates are missing or repeatedly r...

How severe is CVE-2026-59849?

CVE-2026-59849 has been rated LOW with a CVSS base score of 3.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-59849?

Check the references section above for vendor advisories and patch information. Affected products include: Libssh Libssh, Redhat Hardened Images, Redhat Enterprise Linux.