CVE-2026-20358 Cisco Crosswork Security Hardening Release: August 2026
Attackers can manipulate file system paths to read or modify unauthorized files in Cisco Crosswork Planning.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-20358?
CVE-2026-20358 is a critical path traversal vulnerability in Cisco Crosswork Planning, published on 19 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Crosswork engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20358 are related to external control of the file system issues that are grouped Common Weakness Enumeration (CWE) CWE-73.
Weakness: CWE-73
Which versions are affected by CVE-2026-20358?
How do I fix CVE-2026-20358?
No fix has been published for CVE-2026-20358 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-20358 being exploited?
There is no known exploitation of CVE-2026-20358 in the wild and no public exploit code.
Sources
Also known as GHSA-x99g-7wh9-whr2.