Vulnerability Description
A vulnerability was identified in wren-lang wren up to 0.4.0. This affects the function peekChar of the file src/vm/wren_compiler.c of the component Source File Parser. Such manipulation leads to out-of-bounds read. The attack needs to be performed locally. 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.
CVSS Score
LOW
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Wren | Wren | <= 0.4.0 |
Related Weaknesses (CWE)
References
- https://github.com/oneafter/0122/blob/main/i1217/reproIssue TrackingProduct
- https://github.com/wren-lang/wren/Product
- https://github.com/wren-lang/wren/issues/1217Issue Tracking
- https://vuldb.com/?ctiid.347097Permissions RequiredVDB Entry
- https://vuldb.com/?id.347097Third Party AdvisoryVDB Entry
- https://vuldb.com/?submit.754489Third Party AdvisoryVDB Entry
FAQ
What is CVE-2026-2858?
CVE-2026-2858 is a vulnerability with a CVSS score of 3.3 (LOW). A vulnerability was identified in wren-lang wren up to 0.4.0. This affects the function peekChar of the file src/vm/wren_compiler.c of the component Source File Parser. Such manipulation leads to out-...
How severe is CVE-2026-2858?
CVE-2026-2858 has been rated LOW with a CVSS base score of 3.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-2858?
Check the references section above for vendor advisories and patch information. Affected products include: Wren Wren.