CVE-2026-26057 Skill Scanner Unsecured Network Binding Vulnerability
Unauthenticated attackers can cause denial of service or upload arbitrary files if the API server is enabled due to insecure network binding.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-26057?
CVE-2026-26057 is a medium-severity vulnerability in cisco-ai-defense skill-scanner, published on 19 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Skill Scanner is a security scanner for AI Agent Skills that detects prompt injection, data exfiltration, and malicious code patterns. A vulnerability in the API Server of Skill Scanner could allow a unauthenticated, remote attacker to interact with the server API and either trigger a denial of service (DoS) condition or upload arbitrary files. This vulnerability is due to an erroneous binding to multiple interfaces. An attacker could exploit this vulnerability by sending API requests to a device exposing the affected API Server. A successful exploit could allow the attacker to consume an excessive amount of resources (memory starvation) or to upload files to arbitrary folders on the affected device. This vulnerability affects Skill-scanner 1.0.1 and earlier releases when the API Server is enabled. The API Server is not enabled by default. Skill-scanner software releases 1.0.2 and later contain the fix for this vulnerability.
Weakness: CWE-668
Which versions are affected by CVE-2026-26057?
3 open source packages ship an affected version, including cisco-ai-skill-scanner. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
cisco-ai-skill-scanner PyPI | All versions | 1.0.2 |
cisco-ai-skill-scanner PyPI | All versions | 1.0.2 |
cisco-ai-skill-scanner PyPI | All versions | 1.0.2 |
Products include Cisco Skill Scanner.
How do I fix CVE-2026-26057?
Upgrade cisco-ai-skill-scanner to 1.0.2 or later.
Is CVE-2026-26057 being exploited?
There is no known exploitation of CVE-2026-26057 in the wild and no public exploit code.
Sources
Also known as GHSA-ppfx-73j5-fhxc, PYSEC-2026-2415.