CVE-2026-2858

LOW EPSS 2.5%
Published Feb 20, 20264mo ago · Modified Jun 17, 20261w ago
1.9 CVSS 4.0
Low
Find Similar
Published Feb 20, 2026 4mo ago
Last Modified Jun 17, 2026 1w ago

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 Details

Base Score
1.9
Exploitability
—
Impact
—
Vector string
CVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
2.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 2

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer Memory Safety
CWE-125 Out-of-bounds Read Memory Safety

Affected Products 1

VendorProductVersionRange
wrenwren* ≤0.4.0

References 6

  • github.com https://github.com/oneafter/0122/blob/main/i1217/repro
    Issue TrackingProduct
  • github.com https://github.com/wren-lang/wren/
    Product
  • github.com https://github.com/wren-lang/wren/issues/1217
    Issue Tracking
  • vuldb.com https://vuldb.com/?ctiid.347097
    Permissions RequiredVDB Entry
  • vuldb.com https://vuldb.com/?id.347097
    Third Party AdvisoryVDB Entry
  • vuldb.com https://vuldb.com/?submit.754489
    Third Party AdvisoryVDB Entry

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.