Path Traversal in Blackms Aistack
CVE-2026-81560
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.007 (51.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.007 · change: +0.002
Affected products
- Blackms Aistack — versions 1.6.0, 1.6.1
Weakness classification (CWE)
References
- vuldb.com/vuln/396057 (technical-description, vdb-entry)
- vuldb.com/vuln/396057/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-81560 (third-party-advisory)
- vuldb.com/submit/887140 (third-party-advisory)
- github.com/blackms/aistack/issues/57 (issue-tracking, exploit)
- github.com/blackms/aistack/ (product)
Frequently asked questions
- What is CVE-2026-81560?
- CVE-2026-81560 is a medium-severity vulnerability in Blackms Aistack, classified under Path Traversal. CVSS score: 5.3/10. Published 2026-08-27.
- How severe is CVE-2026-81560?
- Medium severity. CVSS v3 base score is 5.3 out of 10.