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The CVE reports that cJSONUtils_ApplyPatches() mutates the target when a patch fails part-way, "defeating the all-or-nothing behavior callers rely on". cJSON never offers that guarantee: cJSON_Utils.h documents "Note that ApplyPatches is NOT atomic on failure" and gives the Duplicate-then-swap recipe for callers that need atomicity. No memory-safety impact; the behaviour is the documented API contract. Upstream has not commented and Debian lists it unfixed with no fix in any suite.

CVE-2026-67217 affects cjson. EPSS 0.00433 (percentile 0.35357), scored 2026-10-03. Fixed version: 1.7.18-3.1+deb13u1+e2.

Published 2026-10-05 08:15:51.559966+00:00

CVE

CVE-2026-67217

Product

cjson

CCR priority

0.1 /100 (P5)

EPSS

0.00433 · percentile 0.35347 · 2026-10-04

KEV

no

Affected products

• cjson · Fixed version: 1.7.18-3.1+deb13u1+e2

Provenance

• OSV.dev · Source record · observed 2026-10-04 23:49:35.786600+00:00 UTC
• FIRST EPSS daily exploit-probability · Source record · observed 2026-10-05 08:16:32.814186+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-67217.html