What is CVE-2023-31922?

CVE-2023-31922 is a high-severity vulnerability in Quickjs Project, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2023-05-12.

How severe is CVE-2023-31922?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2023-31922 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Quickjs Project

CVE-2023-31922

QuickJS commit 2788d71 was discovered to contain a stack-overflow via the component js_proxy_isArray at quickjs.c.

Vulnerability class: Buffer Overflow

Published 2023-05-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.007 (52.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Quickjs Project — versions 2022-03-06

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

EJueon/EJueon

References

github.com/bellard/quickjs/issues/178 (Exploit, Issue Tracking)

Frequently asked questions

What is CVE-2023-31922?: CVE-2023-31922 is a high-severity vulnerability in Quickjs Project, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2023-05-12.
How severe is CVE-2023-31922?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2023-31922 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.