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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.

PUBLISHED Reserved 2026-02-28 | Published 2026-03-01 | Updated 2026-03-02 | Assigner VulDB




MEDIUM: 4.8CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
LOW: 3.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
LOW: 3.3CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
1.7AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR

Problem types

Uncontrolled Recursion

Denial of Service

Product status

0.1
affected

0.2
affected

0.3
affected

0.4.0
affected

Timeline

2026-02-28:Advisory disclosed
2026-02-28:VulDB entry created
2026-02-28:VulDB entry last update

Credits

Oneafter (VulDB User) reporter

References

vuldb.com/?id.348271 (VDB-348271 | wren-lang wren wren_compiler.c resolveLocal recursion) vdb-entry technical-description

vuldb.com/?ctiid.348271 (VDB-348271 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.761305 (Submit #761305 | wren-lang wren main-branch Heap-based Buffer Overflow) third-party-advisory

github.com/wren-lang/wren/issues/1218 issue-tracking

github.com/oneafter/0122/blob/main/i1218/repro exploit

github.com/wren-lang/wren/ product

cve.org (CVE-2026-3385)

nvd.nist.gov (CVE-2026-3385)

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