CVE-2026-88358
mediumsimdjson 4.6.1 contains a one-byte out-of-bounds read vulnerability in dom::parser::parse_unpadded().
simdjson 4.6.1 contains a one-byte out-of-bounds read vulnerability in dom::parser::parse_unpadded(). A specially crafted truncated JSON document whose final structural token closes a nested array or object can cause json_iterator::walk_document() to access buf[len] after the input buffer has been exhausted. This results in a heap out-of-bounds read and may cause application termination, leading to denial of service.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/simdjson/simdjson/commit/20b28712ffce8320237b75a587d35a2e89140577 cve@mitre.org
- https://github.com/simdjson/simdjson/issues/2815 cve@mitre.org
- https://github.com/simdjson/simdjson/pull/2817 cve@mitre.org
- https://github.com/simdjson/simdjson/issues/2815 134c704f-9b21-4f2e-91b3-4a467353bcc0