What’s Vulnerable › Vulnerabilities

CVE-2026-3385: wren-lang wren wren_compiler.c resolveLocal recursion

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-01 · updated 2026-06-17
• Weakness: CWE-404

Description

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.

Affected products

• wren-lang wren: through 0.4.0

References

• https://github.com/oneafter/0122/blob/main/i1218/repro
• https://github.com/wren-lang/wren/
• https://github.com/wren-lang/wren/issues/1218
• https://vuldb.com/?ctiid.348271
• https://vuldb.com/?id.348271
• https://vuldb.com/?submit.761305

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