CVE-2026-59849
HIGH
MEDIUM
Priority: 0.03
BB Relevance:
75/100
Published: 2026-07-21
Modified: 2026-11-06
First seen: 2026-11-06
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
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.
Weakness Classification (1)
Affected Software (20)
| Vendor | Product | Version |
|---|---|---|
| libssh | libssh | 0.11.0 – 0.11.5 |
| libssh | libssh | 0.12.0 |
| redhat | enterprise_linux | 10.0 |
| redhat | enterprise_linux | 10.0 |
| redhat | enterprise_linux | 10.0 |
| redhat | enterprise_linux | 10.2 |
| redhat | enterprise_linux | 10.2 |
| redhat | enterprise_linux_for_els | 10.2 |
| redhat | enterprise_linux_for_els | 10.2 |
| redhat | enterprise_linux_for_eus | 10.2 |
| redhat | enterprise_linux_for_eus | 10.2 |
| redhat | enterprise_linux_for_ibm_z_systems | 10.0 |
| redhat | enterprise_linux_for_ibm_z_systems | 10.2 |
| redhat | enterprise_linux_for_ibm_z_systems_els | 10.2 |
| redhat | enterprise_linux_for_ibm_z_systems_eus | 10.2 |
| redhat | enterprise_linux_for_power_little_endian | 10.0 |
| redhat | enterprise_linux_for_power_little_endian | 10.2 |
| redhat | enterprise_linux_for_power_little_endian_els | 10.2 |
| redhat | enterprise_linux_for_power_little_endian_eus | 10.2 |
| redhat | hardened_images | - |
References & Advisories (4)
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vdb-entry
x_refsource_REDHAT
issue-tracking
x_refsource_REDHAT