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Vulnerability record · CVE-2025-46688 · published 27 April 2025

CVE-2025-46688: Quickjs-ng quickjs vulnerability

QQuickjs Ng · Quickjs

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.

8.4 CVSS 3.1 High EPSS 0.32% · top 77.3% CWE-131 · CWE-131
8.4CVSS 3.1 base score
0.32%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
7References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bellard.org/quickjs/Changelog Product
https://github.com/bellard/quickjs/commit/1eb05e44fad89daafa8ee3eb74b8520b4a37ec9a Patch
https://github.com/bellard/quickjs/issues/399 ExploitThird Party Advisory
https://github.com/quickjs-ng/quickjs/commit/28fa43d3ddff2c1ba91b6e3a788b2d7ba82d1465 Patch
https://github.com/quickjs-ng/quickjs/issues/1018 Third Party Advisory
https://github.com/quickjs-ng/quickjs/pull/1020 Patch
https://github.com/quickjs-ng/quickjs/issues/1018 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2025-62490Quickjs project quickjs use after free vulnerabilityIn quickjs, in js_print_object, when printing an array, the function first fetches the array length and then loops over it. The issue is, printing a …EPSS 0.41%8.8CVE-2025-62491Quickjs project quickjs use after free vulnerabilityA Use-After-Free (UAF) vulnerability exists in the QuickJS engine's standard library when iterating over the global list of unhandled rejected promis…EPSS 0.41%7.8CVE-2025-46687Bellard quickjs allocation without limits vulnerabilityquickjs-ng through 0.9.0 has a missing length check in JS_ReadString for a string, leading to a heap-based buffer overflow. QuickJS before 2025-04-26…EPSS 0.30%7.5CVE-2025-69654Quickjs project quickjs uncontrolled resource consumption vulnerabilityA crafted JavaScript input executed with the QuickJS release 2025-09-13, fixed in commit fcd33c1afa7b3028531f53cd1190a3877454f6b3 (2025-12-11),`qjs` …EPSS 0.28%7.5CVE-2023-48183Quickjs project quickjs null pointer dereference vulnerabilityQuickJS before c4cdd61 has a build_for_in_iterator NULL pointer dereference because of an erroneous lexical scope of "this" with eval.EPSS 0.64%7.5CVE-2023-31922Quickjs project quickjs out-of-bounds write vulnerabilityQuickJS commit 2788d71 was discovered to contain a stack-overflow via the component js_proxy_isArray at quickjs.c.EPSS 0.73%7.5CVE-2020-22876Quickjs project quickjs classic buffer overflow vulnerabilityBuffer Overflow vulnerability in quickjs.c in QuickJS, allows remote attackers to cause denial of service. This issue is resolved in the 2020-07-05 r…EPSS 1.6%7.1CVE-2025-62495Quickjs project quickjs vulnerabilityAn integer overflow vulnerability exists in the QuickJS regular expression engine (libregexp) due to an inconsistent representation of the bytecode b…EPSS 0.46%

Source: NIST National Vulnerability Database (record CVE-2025-46688), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.