CVE-2026-2858: medium-severity vulnerability in wren-lang wren
wren-lang wren Source File wren_compiler.c peekChar out-of-bounds
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 4.8epss 0.1%
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: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
Affected products
wren-lang · wrenRelated CVEs — wren-lang wren
In the same product, most dangerous first.
CVE-2026-2657MEDIUMwren-lang wren Error Message wren_compiler.c printError stack-based overflowEPSS 0.3%CVE-2026-3386MEDIUMwren-lang wren wren_compiler.c emitOp out-of-boundsEPSS 0.2%CVE-2026-3385MEDIUMwren-lang wren wren_compiler.c resolveLocal recursionEPSS 0.2%CVE-2026-3387MEDIUMwren-lang wren wren_compiler.c getByteCountForArguments null pointer dereferenceEPSS 0.2%