CVE-2025-46688

8.4 highEPSS 0.3%

High (8.4). EPSS 0.3% chance of exploitation in the next 30 days.

quickjs-ng through 0.9.0 has an incorrect size calculation in JS_ReadBigInt for a BigInt, leading to a heap-based buffer overflow. QuickJS before 2025-04-26 is also affected.

Severity

CVSS 3.1

8.4 high

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 25% of CVEs (scores of 2026-10-31)
CWE: CWE-131
Published: 2025-04-27
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

quickjs-ng:quickjs
quickjs_project:quickjs

References

https://bellard.org/quickjs/Changelog
https://github.com/bellard/quickjs/commit/1eb05e44fad89daafa8ee3eb74b8520b4a37ec9a
https://github.com/bellard/quickjs/issues/399
https://github.com/quickjs-ng/quickjs/commit/28fa43d3ddff2c1ba91b6e3a788b2d7ba82d1465
https://github.com/quickjs-ng/quickjs/issues/1018

Check your stack JSON