CVE-2026-67216

Katalog CVE

CVSS 7.5 · High EPSS 0,65%

Kerentanan Inefficient Algorithmic Complexity pada davegamble cjson. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

cJSON through 1.7.19 contains an inefficient algorithmic complexity flaw in cJSON_Compare(). When comparing objects, the function recurses into each shared subtree twice, once in each direction, with no depth guard, making the running time exponential in nesting depth. A small, deeply nested document of a few hundred bytes (depth around 40) compared for equality consumes hours of CPU, and the cost roughly doubles with each additional level of nesting. An application that calls cJSON_Compare() on attacker-influenced JSON that is structurally equal to a reference document is exposed to a denial-of-service condition.

Rincian

Terbit di NVD

29 Juli 2026

Terakhir diubah

4 Agustus 2026

Status NVD

Analyzed

CVSS 3.1

7.5 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-407: Inefficient Algorithmic Complexity

EPSS (30 hari)

0,65% peluang dieksploitasi; lebih tinggi dari 49,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/DaveGamble/cJSON/blob/v1.7.19/cJSON.c#L3057-L3180 patch
• https://joshua.hu/cjson-json-parser-cve-vulnerabilities exploit · press/media coverage · advisory pihak ketiga
• https://www.vulncheck.com/advisories/cjson-cjson-compare-exponential-complexity-denial-of-service advisory pihak ketiga