cJSON 1.5.0 through 1.7.18 allows out-of-bounds access via the decode_array_index_from_pointer function in cJSON_Utils.c, allowing remote attackers to bypass array bounds checking and access restricted data via malformed JSON pointer strings containing alphanumeric characters.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade cjson | Oct 28, 2025 | Sep 3, 2025 |
| Debian | — | Upgrade cjson | Sep 16, 2025 | Sep 16, 2025 |
| Suse | — | Upgrade libcjson1 | Dec 5, 2025 | Oct 10, 2025 |
| Ubuntu | — | Upgrade libcjson1 (Ubuntu Pro)Upgrade libcjson1 | Jan 27, 2026 | Sep 3, 2025 |
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