CVE-2026-59844

A flaw was found in libssh. A remote authenticated client can issue SSH_FXP_READ requests with an arbitrarily large length, causing a libssh SFTP server to allocate excessive memory and potentially exhaust it through repeated requests.

Score

CVSS 3.1 6.5 Medium

Status

Modified - secalert@redhat.com

Published

2026-07-21

Last modified

2026-09-01

Weaknesses

CWE-789

Affected products

• Libssh (Libssh)
• Enterprise Linux (Redhat)
• Hardened Images (Redhat)
• Hummingbird (Redhat)

References

• https://access.redhat.com/errata/RHSA-2026:42922
• https://access.redhat.com/errata/RHSA-2026:55855
• https://access.redhat.com/errata/RHSA-2026:62217
• https://access.redhat.com/errata/RHSA-2026:62218
• https://access.redhat.com/security/cve/CVE-2026-59844
• https://bugzilla.redhat.com/show_bug.cgi?id=2498177