{"id":"CVE-2026-67215","aliases":["AZL-94410","AZL-94437","DEBIAN-CVE-2026-67215","EUVD-2026-50327","GHSA-5q3m-r3x7-8phg","ROOT-OS-ALPINE-321-CVE-2026-67215","ROOT-OS-ALPINE-323-CVE-2026-67215","UBUNTU-CVE-2026-67215"],"status":"published","title":"cJSON JSON Patch copy/add Uncontrolled Recursion Stack Exhaustion","description":"cJSON through 1.7.19 is vulnerable to uncontrolled recursion leading to stack exhaustion when an untrusted RFC 6902 JSON Patch is applied via cJSONUtils_ApplyPatches() or cJSONUtils_ApplyPatchesCaseSensitive(). A patch containing add and copy operations grafts duplicated subtrees to amplify document depth beyond the parser's nesting limit: cJSON_Delete() recurses with no depth bound, and the cJSON_Duplicate() guard CJSON_CIRCULAR_LIMIT is set to 10000, ten times the parser's 1000-level nesting limit and high enough to overflow a default thread stack. An attacker who can supply the patch document can crash the process, resulting in denial of service.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.007,"percentile":0.53597,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-674"],"published":"2026-07-29T13:32:02Z","modified":"2026-10-28T02:30:53Z","fixes":[{"ecosystem":"Root:Alpine:3.21","package":"cjson","fixed_in":["1.7.19-r00072","1.7.19-r00071"],"sources":["osv"]},{"ecosystem":"Root:Alpine:3.21","package":"rootio-cjson","fixed_in":["1.7.19-r00072","1.7.19-r00071"],"sources":["osv"]},{"ecosystem":"Root:Alpine:3.23","package":"cjson","fixed_in":["1.7.19-r10074","1.7.19-r10072","1.7.19-r10073"],"sources":["osv"]},{"ecosystem":"Root:Alpine:3.23","package":"rootio-cjson","fixed_in":["1.7.19-r10074","1.7.19-r10072","1.7.19-r10073"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"apparmor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"3.1.7-1"}]}]},{"source":"osv","ecosystem":"Azure Linux:3","package":"libglvnd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.7.0-3"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"cjson","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.7.15-1","1.7.15-1+deb12u1","1.7.15-1+deb12u2","1.7.15-1+deb12u3","1.7.15-1+deb12u4","1.7.16-1","1.7.16-2","1.7.17-1","1.7.17-2","1.7.18-1","1.7.18-2","1.7.18-3","1.7.18-3.1","1.7.18-4","1.7.19-1","1.7.19-2"]},{"source":"osv","ecosystem":"Debian:13","package":"cjson","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.7.18-3.1","1.7.18-3.1+deb13u1","1.7.18-4","1.7.19-1","1.7.19-2"]},{"source":"osv","ecosystem":"Debian:14","package":"cjson","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.7.18-3.1","1.7.18-4","1.7.19-1","1.7.19-2"]},{"source":"osv","ecosystem":"Root:Alpine:3.21","package":"cjson","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.7.19-r00072"},{"fixed":"1.7.19-r00071"}]}]},{"source":"osv","ecosystem":"Root:Alpine:3.21","package":"rootio-cjson","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.7.19-r00072"},{"fixed":"1.7.19-r00071"}]}]},{"source":"osv","ecosystem":"Root:Alpine:3.23","package":"cjson","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.7.19-r10074"},{"fixed":"1.7.19-r10072"},{"fixed":"1.7.19-r10073"}]}]},{"source":"osv","ecosystem":"Root:Alpine:3.23","package":"rootio-cjson","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.7.19-r10074"},{"fixed":"1.7.19-r10072"},{"fixed":"1.7.19-r10073"}]}]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"cjson","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.7.10-1.1","1.7.10-1.1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"cjson","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.7.14-1","1.7.15-1","1.7.15-1ubuntu0.1~esm2","1.7.15-1ubuntu0.1","1.7.15-1ubuntu0.1+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"cjson","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.7.16-1","1.7.16-2","1.7.17-1","1.7.17-1ubuntu0.1~esm2","1.7.17-1ubuntu0.1~esm3"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"cjson","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.7.19-2"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"cjson","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.7.18-3.1","1.7.18-4","1.7.19-1","1.7.19-2"]}],"products":[{"vendor":"cjson project","product":"cjson"},{"vendor":"davegamble","product":"cjson"}],"references":[{"url":"https://joshua.hu/cjson-json-parser-cve-vulnerabilities","tags":["exploit","Exploit","Press/Media Coverage","Third Party Advisory","evidence","report"]},{"url":"https://github.com/DaveGamble/cJSON/blob/v1.7.19/cJSON.c#L253-L261","tags":["technical-description","Patch","article"]},{"url":"https://github.com/DaveGamble/cJSON/blob/v1.7.19/cJSON_Utils.c#L906-L940","tags":["technical-description","Patch","article"]},{"url":"https://www.vulncheck.com/advisories/cjson-json-patch-copy-add-uncontrolled-recursion-stack-exhaustion","tags":["third-party-advisory","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-67215","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-5q3m-r3x7-8phg"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67215.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-67215","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-67215","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-67215","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-67215","title":"cJSON JSON Patch copy/add Uncontrolled Recursion Stack Exhaustion","description":"cJSON through 1.7.19 is vulnerable to uncontrolled recursion leading to stack exhaustion when an untrusted RFC 6902 JSON Patch is applied via cJSONUtils_ApplyPatches() or cJSONUtils_ApplyPatchesCaseSensitive(). A patch containing add and copy operations grafts duplicated subtrees to amplify document depth beyond the parser's nesting limit: cJSON_Delete() recurses with no depth bound, and the cJSON_Duplicate() guard CJSON_CIRCULAR_LIMIT is set to 10000, ten times the parser's 1000-level nesting limit and high enough to overflow a default thread stack. An attacker who can supply the patch document can crash the process, resulting in denial of service.","status":"published","published":"2026-07-29T13:32:02.975Z","modified":"2026-07-29T15:59:48.983Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-674"],"updated_at":"2026-11-02T14:20:06.562031Z"}],"euvd":[{"id":"EUVD-2026-50327","description":"cJSON through 1.7.19 is vulnerable to uncontrolled recursion leading to stack exhaustion when an untrusted RFC 6902 JSON Patch is applied via cJSONUtils_ApplyPatches() or cJSONUtils_ApplyPatchesCaseSensitive(). A patch containing add and copy operations grafts duplicated subtrees to amplify document depth beyond the parser's nesting limit: cJSON_Delete() recurses with no depth bound, and the cJSON_Duplicate() guard CJSON_CIRCULAR_LIMIT is set to 10000, ten times the parser's 1000-level nesting limit and high enough to overflow a default thread stack. An attacker who can supply the patch document can crash the process, resulting in denial of service.","status":"published","published":"2026-07-29T13:32:02Z","modified":"2026-07-29T15:59:48Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T18:02:29.807737Z"}],"ghsa":[{"id":"GHSA-5q3m-r3x7-8phg","title":"cJSON through 1.7.19 is vulnerable to uncontrolled recursion leading to stack exhaustion when an...","description":"cJSON through 1.7.19 is vulnerable to uncontrolled recursion leading to stack exhaustion when an untrusted RFC 6902 JSON Patch is applied via cJSONUtils_ApplyPatches() or cJSONUtils_ApplyPatchesCaseSensitive(). A patch containing add and copy operations grafts duplicated subtrees to amplify document depth beyond the parser's nesting limit: cJSON_Delete() recurses with no depth bound, and the cJSON_Duplicate() guard CJSON_CIRCULAR_LIMIT is set to 10000, ten times the parser's 1000-level nesting limit and high enough to overflow a default thread stack. An attacker who can supply the patch document can crash the process, resulting in denial of service.","status":"published","published":"2026-07-29T15:31:12Z","modified":"2026-07-29T15:31:12Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-674"],"updated_at":"2026-11-02T15:09:54.335538Z"}],"nvd":[{"id":"CVE-2026-67215","description":"cJSON through 1.7.19 is vulnerable to uncontrolled recursion leading to stack exhaustion when an untrusted RFC 6902 JSON Patch is applied via cJSONUtils_ApplyPatches() or cJSONUtils_ApplyPatchesCaseSensitive(). A patch containing add and copy operations grafts duplicated subtrees to amplify document depth beyond the parser's nesting limit: cJSON_Delete() recurses with no depth bound, and the cJSON_Duplicate() guard CJSON_CIRCULAR_LIMIT is set to 10000, ten times the parser's 1000-level nesting limit and high enough to overflow a default thread stack. An attacker who can supply the patch document can crash the process, resulting in denial of service.","status":"published","published":"2026-07-29T14:16:35.187Z","modified":"2026-10-23T23:10:00.157Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-674"],"updated_at":"2026-11-02T14:12:33.629616Z"}],"osv":[{"id":"CVE-2026-67215","title":"cJSON JSON Patch copy/add Uncontrolled Recursion Stack Exhaustion","description":"cJSON through 1.7.19 is vulnerable to uncontrolled recursion leading to stack exhaustion when an untrusted RFC 6902 JSON Patch is applied via cJSONUtils_ApplyPatches() or cJSONUtils_ApplyPatchesCaseSensitive(). A patch containing add and copy operations grafts duplicated subtrees to amplify document depth beyond the parser's nesting limit: cJSON_Delete() recurses with no depth bound, and the cJSON_Duplicate() guard CJSON_CIRCULAR_LIMIT is set to 10000, ten times the parser's 1000-level nesting limit and high enough to overflow a default thread stack. An attacker who can supply the patch document can crash the process, resulting in denial of service.","status":"published","published":"2026-07-29T13:32:02.975Z","modified":"2026-10-28T02:30:53.3395948Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-674"],"updated_at":"2026-11-02T15:45:14.46177Z"},{"id":"DEBIAN-CVE-2026-67215","description":"cJSON through 1.7.19 is vulnerable to uncontrolled recursion leading to stack exhaustion when an untrusted RFC 6902 JSON Patch is applied via cJSONUtils_ApplyPatches() or cJSONUtils_ApplyPatchesCaseSensitive(). A patch containing add and copy operations grafts duplicated subtrees to amplify document depth beyond the parser's nesting limit: cJSON_Delete() recurses with no depth bound, and the cJSON_Duplicate() guard CJSON_CIRCULAR_LIMIT is set to 10000, ten times the parser's 1000-level nesting limit and high enough to overflow a default thread stack. An attacker who can supply the patch document can crash the process, resulting in denial of service.","status":"published","published":"2026-07-29T14:16:35.187Z","modified":"2026-10-24T09:47:28.764443922Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"updated_at":"2026-11-02T15:45:58.699079Z"},{"id":"UBUNTU-CVE-2026-67215","description":"cJSON through 1.7.19 is vulnerable to uncontrolled recursion leading to stack exhaustion when an untrusted RFC 6902 JSON Patch is applied via cJSONUtils_ApplyPatches() or cJSONUtils_ApplyPatchesCaseSensitive(). A patch containing add and copy operations grafts duplicated subtrees to amplify document depth beyond the parser's nesting limit: cJSON_Delete() recurses with no depth bound, and the cJSON_Duplicate() guard CJSON_CIRCULAR_LIMIT is set to 10000, ten times the parser's 1000-level nesting limit and high enough to overflow a default thread stack. An attacker who can supply the patch document can crash the process, resulting in denial of service.","status":"published","published":"2026-07-29T14:16:00Z","modified":"2026-10-17T12:56:41.405742179Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"},{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T16:56:53.710209Z"},{"id":"AZL-94410","title":"CVE-2026-67215 affecting package apparmor 3.1.7-1","description":"cJSON through 1.7.19 is vulnerable to uncontrolled recursion leading to stack exhaustion when an untrusted RFC 6902 JSON Patch is applied via cJSONUtils_ApplyPatches() or cJSONUtils_ApplyPatchesCaseSensitive(). A patch containing add and copy operations grafts duplicated subtrees to amplify document depth beyond the parser's nesting limit: cJSON_Delete() recurses with no depth bound, and the cJSON_Duplicate() guard CJSON_CIRCULAR_LIMIT is set to 10000, ten times the parser's 1000-level nesting limit and high enough to overflow a default thread stack. An attacker who can supply the patch document can crash the process, resulting in denial of service.","status":"published","published":"2026-07-29T14:16:35Z","modified":"2026-10-15T05:37:09Z","updated_at":"2026-11-02T15:28:12.028669Z"},{"id":"AZL-94437","title":"CVE-2026-67215 affecting package libglvnd 1.7.0-3","description":"cJSON through 1.7.19 is vulnerable to uncontrolled recursion leading to stack exhaustion when an untrusted RFC 6902 JSON Patch is applied via cJSONUtils_ApplyPatches() or cJSONUtils_ApplyPatchesCaseSensitive(). A patch containing add and copy operations grafts duplicated subtrees to amplify document depth beyond the parser's nesting limit: cJSON_Delete() recurses with no depth bound, and the cJSON_Duplicate() guard CJSON_CIRCULAR_LIMIT is set to 10000, ten times the parser's 1000-level nesting limit and high enough to overflow a default thread stack. An attacker who can supply the patch document can crash the process, resulting in denial of service.","status":"published","published":"2026-07-29T14:16:35Z","modified":"2026-10-15T05:37:09Z","updated_at":"2026-11-02T15:28:12.028669Z"},{"id":"ROOT-OS-ALPINE-321-CVE-2026-67215","title":"CVE-2026-67215 in cjson - Patched by Root","description":"Root has patched CVE-2026-67215 in the cjson package for Root:Alpine:3.21. Multiple fixed versions available.","status":"published","published":"2026-09-29T09:23:51Z","modified":"2026-09-29T10:15:18.119592165Z","updated_at":"2026-11-02T15:53:28.544053Z"},{"id":"ROOT-OS-ALPINE-323-CVE-2026-67215","title":"CVE-2026-67215 in cjson - Patched by Root","description":"Root has patched CVE-2026-67215 in the cjson package for Root:Alpine:3.23. Multiple fixed versions available.","status":"published","published":"2026-09-29T09:58:17Z","modified":"2026-09-29T10:15:42.858788029Z","updated_at":"2026-11-02T15:53:28.544053Z"}]}}