cJSON 1.7.15 might allow a denial of service via a crafted JSON document such as {"a": true, "b": [ null,9999999999999999999999999999999999999999999999912345678901234567]}.

The remote Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7973-1 advisory.

    It was discovered that cJSON incorrectly handled parsing large numbers. An attacker could possibly use     this issue to cause a denial of service. (CVE-2023-26819)

    It was discovered that cJSON may perform out-of-bounds read when processing specially crafted JSON files     using parse_object. An attacker could possibly use this issue to expose sensitive information or crash the     program. (CVE-2023-53154)

    It was discovered that cJSON incorrectly validated array indices in JSON pointers, which could result in     an out-of-bounds memory access. An attacker could possibly use this issue to cause a denial of service, or     execute arbitrary code. (CVE-2025-57052)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of libglvnd installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2023-26819 advisory.

  - cJSON 1.7.15 might allow a denial of service via a crafted JSON document such as {a: true, b: [     null,9999999999999999999999999999999999999999999999912345678901234567]}. (CVE-2023-26819)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:03520-1 advisory.

    - CVE-2023-26819: Allocate memory for the temporary buffer when paring numbers (bsc#1241502)
    - CVE-2025-57052: Fix the incorrect check in decode_array_index_from_pointer (bsc#1249112)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - cJSON 1.7.15 might allow a denial of service via a crafted JSON document such as {a: true, b: [     null,9999999999999999999999999999999999999999999999912345678901234567]}. (CVE-2023-26819)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4216 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-4216-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                          Adrian Bunk     June 15, 2025                                 https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : cjson     Version        : 1.7.14-1+deb11u2     CVE ID         : CVE-2023-26819 CVE-2023-53154     Debian Bug     : 1103687

    Two vulnerabilities have been fixed in cJSON,     a C library for parsing JSON.

    CVE-2023-26819

        rejection of valid texts

    CVE-2023-53154

        heap buffer overflow

    For Debian 11 bullseye, these problems have been fixed in version     1.7.14-1+deb11u2.

    We recommend that you upgrade your cjson packages.

    For the detailed security status of cjson please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/cjson

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
296748	Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 : cJSON vulnerabilities (USN-7973-1)	Nessus	Ubuntu Local Security Checks	medium
295612	Azure Linux 3.0 Security Update: libglvnd (CVE-2023-26819)	Nessus	Azure Linux Local Security Checks	low
270096	SUSE SLED15 / SLES15 Security Update : cJSON (SUSE-SU-2025:03520-1)	Nessus	SuSE Local Security Checks	critical
253126	Linux Distros Unpatched Vulnerability : CVE-2023-26819	Nessus	Misc.	low
238477	Debian dla-4216 : libcjson-dev - security update	Nessus	Debian Local Security Checks	low

Detections

Analytics

CVE-2023-26819

low

Tenable Plugins

medium

low

critical

low

low