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CVE-2023-53154

parse_string in cJSON before 1.7.18 has a heap-based buffer over-read via {"1":1, with no...

2.9 LowFix available

parse_string in cJSON before 1.7.18 has a heap-based buffer over-read via {"1":1, with no trailing newline if cJSON_ParseWithLength is called.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
High
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
Low

Exploit likelihood

0.28%Up 0.3 points since May 24, 2025
90%50%10%1%

What each source reports

CVE List Score used 2.9

parse_string in cJSON before 1.7.18 has a heap-based buffer over-read via {"1":1, with no trailing newline if cJSON_ParseWithLength is called.

Record
CVE-2023-53154
CVSS 3.1
2.9 LowCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness
CWE-125
Updated
2026-11-02
EUVDEUVD-2023-59777 2.9

parse_string in cJSON before 1.7.18 has a heap-based buffer over-read via {"1":1, with no trailing newline if cJSON_ParseWithLength is called.

Record
EUVD-2023-59777
CVSS 3.1
2.9 LowCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Updated
2026-11-02
GitHub AdvisoriesGHSA-8h4w-44qv-79mq 2.9

parse_string in cJSON before 1.7.18 has a heap-based buffer over-read via {"1":1, with no...

parse_string in cJSON before 1.7.18 has a heap-based buffer over-read via {"1":1, with no trailing newline if cJSON_ParseWithLength is called.

Record
GHSA-8h4w-44qv-79mq
CVSS 3.1
2.9 LowCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness
CWE-125
Updated
2026-11-02
NVD 2.9

parse_string in cJSON before 1.7.18 has a heap-based buffer over-read via {"1":1, with no trailing newline if cJSON_ParseWithLength is called.

Record
CVE-2023-53154
CVSS 3.1
2.9 LowCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-125
Updated
2026-11-02
OSV 2.9

parse_string in cJSON before 1.7.18 has a heap-based buffer over-read via {"1":1, with no trailing newline if cJSON_ParseWithLength is called.

Record
CVE-2023-53154
CVSS 3.1
2.9 LowCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness
CWE-125
Updated
2026-11-02
OSVDEBIAN-CVE-2023-53154 5.5

parse_string in cJSON before 1.7.18 has a heap-based buffer over-read via {"1":1, with no trailing newline if cJSON_ParseWithLength is called.

Record
DEBIAN-CVE-2023-53154
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
Show 5 moreShow less
OSVUBUNTU-CVE-2023-53154 2.9

parse_string in cJSON before 1.7.18 has a heap-based buffer over-read via {"1":1, with no trailing newline if cJSON_ParseWithLength is called.

Record
UBUNTU-CVE-2023-53154
CVSS 3.1
2.9 LowCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVAZL-62005 No score

CVE-2023-53154 affecting package apparmor for versions less than 3.0.4-5

parse_string in cJSON before 1.7.18 has a heap-based buffer over-read via {"1":1, with no trailing newline if cJSON_ParseWithLength is called.

Record
AZL-62005
Updated
2026-11-02
OSVAZL-67455 No score

CVE-2023-53154 affecting package apparmor for versions less than 3.1.7-1

parse_string in cJSON before 1.7.18 has a heap-based buffer over-read via {"1":1, with no trailing newline if cJSON_ParseWithLength is called.

Record
AZL-67455
Updated
2026-11-05
OSVROOT-OS-DEBIAN-12-CVE-2023-53154 No score

CVE-2023-53154 in cjson - Patched by Root

Root has patched CVE-2023-53154 in the cjson package for Root:Debian:12. Multiple fixed versions available.

Record
ROOT-OS-DEBIAN-12-CVE-2023-53154
Updated
2026-11-02
OSVUSN-7973-1 No score

cjson vulnerabilities

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)

Record
USN-7973-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
apparmor
Azure Linux:2
 before 3.0.4-5
3.0.4-5
apparmor
Azure Linux:3
 before 3.1.7-1
3.1.7-1
cjson
Debian:12
 before 1.7.15-1+deb12u3, plus listed versions
1.7.15-11.7.15-1+deb12u11.7.15-1+deb12u2
1.7.15-1+deb12u3
cjson
Debian:13
 before 1.7.18-1
1.7.18-1
cjson
Debian:14
 before 1.7.18-1
1.7.18-1
cjson
Debian:11
From an advisory covering 2 CVEs
 before 1.7.14-1+deb11u2, plus listed versions
1.7.14-11.7.14-1+deb11u1
1.7.14-1+deb11u2
cjson
Root:Debian:12
 before 1.7.15-1+deb12u4.aikido.3
1.7.15-1+deb12u4.aikido.31.7.15-1+deb12u2.root.io.11.7.15-1+deb12u4.aikido.2
rootio-cjson
Root:Debian:12
 before 1.7.15-1+deb12u4.aikido.3
1.7.15-1+deb12u4.aikido.31.7.15-1+deb12u2.root.io.11.7.15-1+deb12u4.aikido.2
cjson
Ubuntu:Pro:20.04:LTS
 before 1.7.10-1.1ubuntu0.1~esm1, plus listed versions
1.7.10-1.1
1.7.10-1.1ubuntu0.1~esm1
cjson
Ubuntu:22.04:LTS
 before 1.7.15-1ubuntu0.1, plus listed versions
1.7.14-11.7.15-1
1.7.15-1ubuntu0.1
Show 5 moreShow less
Affected packages
PackageAffectedFixed
cjson
Ubuntu:Pro:24.04:LTS
 before 1.7.17-1ubuntu0.1~esm3, plus listed versions
1.7.16-11.7.16-21.7.17-11.7.17-1ubuntu0.1~esm2
1.7.17-1ubuntu0.1~esm3
cjson
Ubuntu:Pro:20.04:LTS
From an advisory covering 3 CVEs
 before 1.7.10-1.1ubuntu0.1~esm1, plus listed versions
1.7.10-1.1
1.7.10-1.1ubuntu0.1~esm1
cjson
Ubuntu:22.04:LTS
From an advisory covering 3 CVEs
 before 1.7.15-1ubuntu0.1, plus listed versions
1.7.14-11.7.15-1
1.7.15-1ubuntu0.1
cjson
Ubuntu:Pro:24.04:LTS
From an advisory covering 3 CVEs
 before 1.7.17-1ubuntu0.1~esm3, plus listed versions
1.7.16-11.7.16-21.7.17-11.7.17-1ubuntu0.1~esm2
1.7.17-1ubuntu0.1~esm3
cjson
Ubuntu:25.10
From an advisory covering 3 CVEs
 before 1.7.18-3.1ubuntu0.1, plus listed versions
1.7.18-31.7.18-3.1
1.7.18-3.1ubuntu0.1

History

History
RecordedChangedSources
affected
factsOSV
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-53154 is a low vulnerability (CVSS 2.9) in Cjson Project Cjson, published May 23, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.28%, the 20th percentile. Fixed in apparmor 3.0.4-5.

References

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