CVE catalog

CVE-2026-67217

Severity: Medium · CVSS 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/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
Published: Jul 29, 2026, 1:32:04 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.43% · Oct 25, 2026

cJSON through 1.7.19 applies RFC 6902 JSON Patch operations non-atomically in apply_patch() in cJSON_Utils.c. For a replace operation that is missing its value member, or a move operation whose destination path cannot be resolved, the existing target member is detached and deleted before the operation is fully validated, so the target document is mutated while cJSONUtils_ApplyPatches() or cJSONUtils_ApplyPatchesCaseSensitive() returns a failure status. An attacker who can supply the patch document can destroy addressable members of the target document even though the API reports that the patch failed, defeating the all-or-nothing behavior callers rely on to reject bad patches.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	cjson	sid	`1.7.19-2`	vulnerable
Debian	cjson	forky	`1.7.19-2`	vulnerable
Debian	cjson	trixie	`1.7.18-3.1+deb13u1`	vulnerable
Debian	cjson	trixie-security	`1.7.18-3.1+deb13u1`	vulnerable
Debian	cjson	bookworm	`1.7.15-1+deb12u4`	vulnerable
Debian	cjson	bookworm-security	`1.7.15-1+deb12u4`	vulnerable
Cpe	cjson	Not reported	Not reported	unknown

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	cjson	source	sid	`(unfixed)`	not yet assigned	Not reported	[1143048]
Debian	cjson	source	forky	`(unfixed)`	not yet assigned	Not reported	[1143048]
Debian	cjson	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1143048]
Debian	cjson	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1143048]

[Debian bug #1143048]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libcjson1]Affected
Source package: [cjson]
Details (4)
- 1.7.15-1+deb12u4 · amd64 · bookworm
  Affected
  nvd · cjson · debian · bookworm; nvd · cjson · debian · 12
- 1.7.15-1+deb12u4 · arm64 · bookworm
  Affected
  nvd · cjson · debian · bookworm; nvd · cjson · debian · 12
- 1.7.15-1+deb12u4 · amd64 · bookworm-security
  Affected
  nvd · cjson · debian · bookworm; nvd · cjson · debian · 12
- 1.7.15-1+deb12u4 · arm64 · bookworm-security
  Affected
  nvd · cjson · debian · bookworm; nvd · cjson · debian · 12
[libcjson-dev]Affected
Source package: [cjson]
Details (4)
- 1.7.15-1+deb12u4 · amd64 · bookworm
  Affected
  nvd · cjson · debian · bookworm; nvd · cjson · debian · 12
- 1.7.15-1+deb12u4 · arm64 · bookworm
  Affected
  nvd · cjson · debian · bookworm; nvd · cjson · debian · 12
- 1.7.15-1+deb12u4 · amd64 · bookworm-security
  Affected
  nvd · cjson · debian · bookworm; nvd · cjson · debian · 12
- 1.7.15-1+deb12u4 · arm64 · bookworm-security
  Affected
  nvd · cjson · debian · bookworm; nvd · cjson · debian · 12

[Debian 13 (Trixie)]

[libcjson1]Affected
Source package: [cjson]
Details (4)
- 1.7.18-3.1+deb13u1 · amd64 · trixie
  Affected
  nvd · cjson · debian · 13
- 1.7.18-3.1+deb13u1 · arm64 · trixie
  Affected
  nvd · cjson · debian · 13
- 1.7.18-3.1+deb13u1 · amd64 · trixie-security
  Affected
  nvd · cjson · debian · 13
- 1.7.18-3.1+deb13u1 · arm64 · trixie-security
  Affected
  nvd · cjson · debian · 13
[libcjson-dev]Affected
Source package: [cjson]
Details (4)
- 1.7.18-3.1+deb13u1 · amd64 · trixie
  Affected
  nvd · cjson · debian · 13
- 1.7.18-3.1+deb13u1 · arm64 · trixie
  Affected
  nvd · cjson · debian · 13
- 1.7.18-3.1+deb13u1 · amd64 · trixie-security
  Affected
  nvd · cjson · debian · 13
- 1.7.18-3.1+deb13u1 · arm64 · trixie-security
  Affected
  nvd · cjson · debian · 13

Observed: Oct 27, 2026, 7:11:22 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]