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Fencer Vulns
medium 6.2

CVE-2023-50268 json

jq has stack-based buffer overflow in decNaNs

published 2023-12-13 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-55080

cvss
6.2
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 38%
public exploits
0
none known

Summary

jq is a command-line JSON processor. Version 1.7 is vulnerable to stack-based buffer overflow in builds using decNumber. Version 1.7.1 contains a patch for this issue.

Patch / fix

  • jq_project jq 1.7.1
  • jqlang jq 1.7.1
  • jq Debian 14, Debian 13 1.7.1-1

debian advisories DEBIAN-CVE-2023-50268

  • jq Ubuntu 24.04 LTS 1.7.1-2

ubuntu advisories UBUNTU-CVE-2023-50268

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

  • jq SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES for SAP 15 SP4 +11 more 1.7.1-150000.3.25.1
  • jq Linux Micro 6.0 1.7.1-1.1

suse advisories SUSE-SU-2026:4275-1SUSE-SU-2026:23873-1

  • jq openSUSE Tumbleweed 1.7.1-1.1

opensuse advisories openSUSE-SU-2024:13521-1

  • jq Alpine 3.24, Alpine 3.23, Alpine 3.22 +1 more 1.7.1-r0

alpine advisories ALPINE-CVE-2023-50268

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-50268 updated cvss 6.2

jq: stack-based buffer overflow in builds using decNumber

  • Red Hat Ceph Storage 4 jq Red Hat Enterprise Linux 8 jq Red Hat Enterprise Linux 9 jq
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/jqlang/jq/security/advisories/GHSA-7hmr-442f-qc8j referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • jqlang jq

Classification

Weakness
  • CWE-121 Stack-based Buffer Overflow
  • CWE-120 Buffer Copy without Checking Size of Input
  • CWE-787 Out-of-bounds Write

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Improve version ranges to indicate fix.