CVE-2023-53154

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.

CVE-2023-53154 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2023-53154, released May 23, 2025. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

5.5

medium

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0028

20th percentile

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.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
cjson · Debian 12.15 (bookworm)	1.7.15-1+deb12u3	DEBIAN-CVE-2023-53154	May 23, 2025
cjson · Debian 13.5 (trixie)	1.7.18-1	DEBIAN-CVE-2023-53154	May 23, 2025
cjson · Debian 14	1.7.18-1	DEBIAN-CVE-2023-53154	May 23, 2025
libcjson1 · Ubuntu 20.04 LTS (focal)	1.7.10-1.1ubuntu0.1~esm1	libcjson1 1.7.10-1.1ubuntu0.1~esm1	Sep 3, 2025
libcjson1 · Ubuntu 22.04.1 LTS (jammy)	1.7.15-1ubuntu0.1	libcjson1 1.7.15-1ubuntu0.1	Sep 3, 2025
libcjson1 · Ubuntu 24.04.5 LTS (noble)	1.7.17-1ubuntu0.1~esm3	libcjson1 1.7.17-1ubuntu0.1~esm3	Sep 3, 2025

Details

Published
May 23, 2025
Weakness
Out-of-bounds Read
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-53154

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