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Fencer Vulns
low 3.9

CVE-2023-48184 json

QuickJS before 7414e5f has a quickjs.h JS_FreeValueRT use-after-free because of incorrect garbage collection of async functions with closur…

published 2024-04-23 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-52264

cvss
3.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 28%
public exploits
0
none known

Summary

QuickJS before 7414e5f has a quickjs.h JS_FreeValueRT use-after-free because of incorrect garbage collection of async functions with closures.

Patch / fix

  • quickjs_project quickjs 2023-12-27
  • quickjs Debian 14, Debian 13 2024.01.13-1

debian advisories DEBIAN-CVE-2023-48184

  • quickjs Ubuntu Pro 24.04 LTS 2021.03.27-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2023-48184

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.34% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/bellard/quickjs/issues/198 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 3.9 CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L
CNA 3.1 3.9 CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L

Affected products

  • quickjs_project quickjs

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.