Skip to content
Fencer Vulns
high 7.6

CVE-2024-31755 json

cJSON v1.7.17 was discovered to contain a segmentation violation, which can trigger through the second parameter of function cJSON_SetValue…

published 2024-04-26 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-29628

cvss
7.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 51%
public exploits
0
none known

Summary

cJSON v1.7.17 was discovered to contain a segmentation violation, which can trigger through the second parameter of function cJSON_SetValuestring at cJSON.c.

Patch / fix

  • cjson Debian 12 1.7.15-1+deb12u2
  • cjson Debian 14, Debian 13 1.7.18-1

debian advisories DEBIAN-CVE-2024-31755

  • cjson Ubuntu Pro 22.04 LTS 1.7.15-1ubuntu0.1~esm2
  • cjson Ubuntu Pro 24.04 LTS 1.7.17-1ubuntu0.1~esm2

ubuntu advisories UBUNTU-CVE-2024-31755

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

  • cjson satellite capsule 6.16, satellite capsule 6.15, satellite 6.16 +1 more 1.7.18-1.el8sat
  • rubygem-rack satellite capsule 6.15, satellite 6.15 2.2.14-1.el8sat
  • python-sqlparse satellite capsule 6.15, satellite 6.15 0.5.0-1.el8pc
  • python3.11-sqlparse satellite capsule 6.15, satellite 6.15 0.5.0-1.el8pc
  • cjson satellite capsule 6.17, satellite capsule 6.16, satellite 6.17 +1 more 1.7.18-1.el9sat

red hat advisories RHSA-2025:9838RHSA-2025:9203RHSA-2025:9022

  • cJSON openSUSE Tumbleweed 1.7.18-1.1
  • cJSON Package Hub 15 SP5, openSUSE Leap 15.5 1.7.18-bp155.3.3.1

opensuse advisories openSUSE-SU-2024:14021-1openSUSE-SU-2024:0139-1

  • apparmor CBL-Mariner 2.0 3.0.4-4
  • apparmor Azure Linux 3.0 3.1.7-1

azure linux advisories AZL-40184AZL-67458

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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-2024-31755 updated cvss 7.5

cjson: segmentation violation trigger through the second parameter of function cJSON_SetValuestring at cJSON.c

  • Red Hat Satellite 6.15 for RHEL 8 cjson 1.7.18-1.el8sat
    fixed: vendor fix “Currently, there's no available mitigation that matches Red Hat's mitigation criteria other than updating the affected packages.” RHSA-2025:9838
  • Red Hat Satellite 6.16 for RHEL 8 cjson 1.7.18-1.el8sat Red Hat Satellite 6.16 for RHEL 9 cjson 1.7.18-1.el9sat
    fixed: vendor fix “Currently, there's no available mitigation that matches Red Hat's mitigation criteria other than updating the affected packages.” RHSA-2025:9203
  • Red Hat Satellite 6.17 for RHEL 9 cjson 1.7.18-1.el9sat
    fixed: vendor fix “Currently, there's no available mitigation that matches Red Hat's mitigation criteria other than updating the affected packages.” RHSA-2025:9022
  • Red Hat Satellite 6.15 for RHEL 8 satellite 6.15.5.3-1.el8sat, rubygem-rack 2.2.14-1.el8sat, python-sqlparse 0.5.0-1.el8pc, satellite-cli 6.15.5.3-1.el8sat, python3.11-sqlparse 0.5.0-1.el8pc, satellite-common 6.15.5.3-1.el8sat, +2 more Red Hat Satellite 6.16 for RHEL 8 satellite 6.16.5.2-1.el8sat, satellite-cli 6.16.5.2-1.el8sat, satellite-common 6.16.5.2-1.el8sat, satellite-capsule 6.16.5.2-1.el8sat, rubygem-foreman_rh_cloud 10.0.6-1.el8sat, ansible-collection-redhat-satellite 4.2.1-1.el8sat Red Hat Satellite 6.16 for RHEL 9 satellite 6.16.5.2-1.el9sat, satellite-cli 6.16.5.2-1.el9sat, satellite-common 6.16.5.2-1.el9sat, satellite-capsule 6.16.5.2-1.el9sat, rubygem-foreman_rh_cloud 10.0.6-1.el9sat, ansible-collection-redhat-satellite 4.2.1-1.el9sat Red Hat Satellite 6.17 for RHEL 9 foreman 3.14.0.3-1.el9sat, satellite 6.17.1-1.el9sat, foreman-cli 3.14.0.3-1.el9sat, foreman-ec2 3.14.0.3-1.el9sat, foreman-pcp 3.14.0.3-1.el9sat, satellite-cli 6.17.1-1.el9sat, +25 more
    not affected: vulnerable code not present “Currently, there's no available mitigation that matches Red Hat's mitigation criteria other than updating the affected packages.”

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

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.65% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/DaveGamble/cJSON/issues/839 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.6 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
CNA 3.1 7.6 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

Affected products

  • cjson_project cjson

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.