# CVE-2026-59845

## Summary

- **CVE ID:** CVE-2026-59845
- **Severity:** MEDIUM
- **CVSS Score:** 5.3 (CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:N/I:N/A:H)
- **CWE:** CWE-390
- **Published:** Jul 21, 2026
- **Last Modified:** Sep 1, 2026

## Description

A flaw was found in libssh. When ProxyCommand is used, an unchecked fork() failure can be stored as process ID -1; during cleanup, signals may then be sent across the caller's accessible process tree, leading to local denial of service.

## Affected Products

- Red Hat — Red Hat Hardened Images (0.12.1-4.hum1)
- Red Hat — Red Hat Enterprise Linux 10 (0:0.12.0-3.el10_2)
- Red Hat — Red Hat Enterprise Linux 8 (0:0.9.6-17.el8_10)
- Red Hat — Red Hat Enterprise Linux 9 (0:0.10.4-19.el9_8)

## References

- [CNA](https://access.redhat.com/security/cve/CVE-2026-59845)
- [CNA](https://bugzilla.redhat.com/show_bug.cgi?id=2498178)
- [CNA](https://access.redhat.com/errata/RHSA-2026:42922)
- [CNA](https://access.redhat.com/errata/RHSA-2026:55855)
- [CNA](https://access.redhat.com/errata/RHSA-2026:62218)
- [CNA](https://access.redhat.com/errata/RHSA-2026:62217)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.10%
- **EPSS Percentile:** 1.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._