CVE-2026-29036
- Source
- https://cve.org/CVERecord?id=CVE-2026-29036
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-29036.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-29036
- Downstream
- Published
- 2026-08-11T21:30:01Z
- Modified
- 2026-10-28T02:30:53Z
- Severity
-
- 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- cJSON 1.7.19 Wrong-Key Modification via JSON Pointer Escape Decoding
- Details
-
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.
- Database specific
{ "cna_assigner": "VulnCheck", "cwe_ids": [ "CWE-706" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/29xxx/CVE-2026-29036.json" }- References
Affected packages
Git / github.com/davegamble/cjson
Affected ranges
- Type
- GIT
- Repo
- https://github.com/davegamble/cjson
- Events
-
IntroducedLast Affected
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "1.5.0" }, { "last_affected": "1.7.19" } ], "source": "AFFECTED_FIELD", "strategy": "StandardRange" }, { "range": [ { "introduced": "1.5.0" }, { "last_affected": "1.7.19" } ], "source": "DESCRIPTION" } ] }