CVE-2026-26057 is a medium-severity (CVSS 6.5) CWE-668 vulnerability in cisco-ai-skill-scanner. A fix is available for cisco-ai-skill-scanner — see the affected versions and patch details below.
Skill Scanner Unsecured Network Binding Vulnerability
Exploitation Status
No confirmed exploitation observed yet
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2026-26057.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
cisco-ai-skill-scannerReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
Description: 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.
Conditions: 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.
Fixed Software: Skill-scanner software releases 1.0.2 and later contained the fix for this vulnerability.
For more information: If you have any questions or comments about this advisory:
- Open an issue in cisco-ai-defense/skill-scanner
- Email Cisco Open Source Security ([email protected]) and Cisco PSIRT ([email protected])
Credits:
- Research: Richard Tweed (@RichardoC)
- Fix ideation and implementation: Richard Tweed (@RichardoC)
- Release engineering: Vineeth Sai Narajala (@vineethsai7)
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | cisco-ai-skill-scanner | all versions | 1.0.2pip install --upgrade 'cisco-ai-skill-scanner==1.0.2' |
Affected Products
skill scannerciscoDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for cisco-ai-skill-scanner, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update cisco-ai-skill-scanner to 1.0.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-26057 is resolved across your whole dependency graph.
Workarounds
Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.
Frequently Asked Questions
Is CVE-2026-26057 in your dependencies?
Find it across PyPI, including transitive dependencies.