CVE-2026-67215Patch(davegamble / cjson)

LOWCVSS 8.7 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch davegamble cjson systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD 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.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-674

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • cjson

Threat summary

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • 1 total mentions across 1 day

Affected systems

Vendors
Products
cjson

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-08-01: 1Patch / Workaround · 2026-08-01: 1Technical Details · 2026-08-01: 108-01
Signal classification1 categories
Patch
1100.0%
Full discourse1 post
  • DFIR Lab@DFIR_Lab
    Patch

    🚨 HIGH severity CVE-2026-67215 (CVSS 7.5): cJSON ≤1.7.19 vulnerable to uncontrolled recursion via malicious RFC 6902 JSON Patch. Attackers can crash processes remotely. Patch immediately. #CVE #Vulnerability #PatchNow #ThreatIntel https://t.co/poE2g8oghQ

    Post summary

    The tweet announces CVE-2026-67215, a high‑severity vulnerability in cJSON, and urges users to apply available patches immediately.

    0001049
    99 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appdavegamblecjson---

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