CVE-2026-81560: blackms aistack Static File server.ts path traversal

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-27 · updated 2026-08-29
Weakness: CWE-22

Description

A vulnerability was identified in blackms aistack up to 1.6.1. Affected by this issue is some unknown functionality of the file src/web/server.ts of the component Static File Handler. Such manipulation of the argument req.url leads to path traversal. The attack can be executed remotely. The exploit is publicly available and might be used. The project was informed of the problem early through an issue report but has not responded yet.

Affected products

blackms aistack: 1.6.0, 1.6.1

References

https://github.com/blackms/aistack/
https://github.com/blackms/aistack/issues/57
https://vuldb.com/cve/CVE-2026-81560
https://vuldb.com/submit/887140
https://vuldb.com/vuln/396057
https://vuldb.com/vuln/396057/cti

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