Bug 2514418 (CVE-2026-29036) - CVE-2026-29036 cJSON: cJSON: Data corruption and unauthorized modification via JSON Pointer escape decoding
Summary: CVE-2026-29036 cJSON: cJSON: Data corruption and unauthorized modification vi...
Keywords:
Status: NEW
Alias: CVE-2026-29036
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2515200 2515201
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-11 21:51 UTC by OSIDB Bzimport
Modified: 2026-08-13 09:41 UTC (History)
15 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-08-11 21:51:30 UTC 
cJSON versions 1.5.0 through 1.7.19 contain an incorrectly-resolved name or reference vulnerability in the decode_pointer_inplace() function within cJSON_Utils.c that allows unauthenticated attackers to cause JSON Patch operations to target wrong object keys by supplying crafted JSON Pointer escape sequences (~0 or ~1) in patch paths. Attackers can submit malicious RFC 6902 JSON Patch input to applications using cJSONUtils_ApplyPatches() or cJSONUtils_ApplyPatchesCaseSensitive() to silently corrupt data or delete unintended keys, potentially bypassing authorization controls in applications that rely on JSON Patch for access-controlled data modification.
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