Vulnerability in Openclaw
CVE-2026-31990
OpenClaw versions prior to 2026.3.2 contain a vulnerability in the stageSandboxMedia function in which it fails to validate destination symlinks during media staging, allowing writes to follow symlinks outside the sandbox workspace. Attackers can exploit this by placing symlinks in the media/inbound directory to overwrite arbitrary files on the host system outside sandbox boundaries.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L.
EPSS exploit prediction
EPSS: 0.002 (6.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 6.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000
Affected products
- Openclaw — versions 0
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-cfvj-7rx7-fc7c (vendor-advisory, Mitigation, Vendor Advisory, third-party-advisory)
- github.com/openclaw/openclaw/commit/17ede52a4be3034f6ec4b883ac6b81ad0101558a (Patch, patch)
- www.vulncheck.com/advisories/openclaw-symlink-traversal-in-stagesandboxmedia-de… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-31990?
- CVE-2026-31990 is a medium-severity vulnerability in Openclaw, classified under Improper Link Resolution Before File Access. CVSS score: 6.1/10. Published 2026-03-19.
- How severe is CVE-2026-31990?
- Medium severity. CVSS v3 base score is 6.1 out of 10.