Vulnerability in Wren
CVE-2026-3385
A vulnerability was detected in wren-lang wren up to 0.4.0. Affected is the function resolveLocal of the file src/vm/wren_compiler.c. The manipulation results in uncontrolled recursion. Attacking locally is a requirement. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.002 (8.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 8.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Wren
- Wren-Lang Wren — versions 0.1, 0.2, 0.3
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/wren-lang/wren/issues/1218 (issue-tracking, Exploit, Issue Tracking, Vendor Advisory)
- github.com/oneafter/0122/blob/main/i1218/repro (Exploit, exploit)
- github.com/wren-lang/wren/ (Product, product)
Frequently asked questions
- What is CVE-2026-3385?
- CVE-2026-3385 is a low-severity vulnerability in Wren, classified under Improper Resource Shutdown or Release. CVSS score: 3.3/10. Published 2026-03-01.
- How severe is CVE-2026-3385?
- Low severity. CVSS v3 base score is 3.3 out of 10.