CVE-2026-12216: svaarala duktape duk_api_bytecode.c memory corruption

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-15 · updated 2026-07-24
Weakness: CWE-119

Description

A weakness has been identified in svaarala duktape up to 2.99.99. This issue affects some unknown processing of the file duk_api_bytecode.c. Executing a manipulation of the argument count_instr can lead to memory corruption. The attack requires local access. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

svaarala duktape: 2.99.0, 2.99.1, 2.99.2, 2.99.3, 2.99.4, 2.99.5 (+94)

References

https://github.com/hmKunlun/compileOOB/blob/main/api_bytecode.md
https://vuldb.com/cve/CVE-2026-12216
https://vuldb.com/submit/833814
https://vuldb.com/vuln/370859
https://vuldb.com/vuln/370859/cti

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