CVE-2026-29975_CVE-2026-29975

7.5 / 10

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

lwjson 1.8.1 contains an improper input validation vulnerability in the streaming JSON parser (lwjson_stream.c). The end-of-string detection logic incorrectly identifies escaped quote characters by only checking the immediately preceding character rather than counting consecutive backslashes, causing valid JSON strings ending with an escaped backslash (like "\\") to never terminate parsing. A remote attacker can send well-formed JSON to cause applications using lwjson_stream_parse() to hang indefinitely, resulting in denial of service.

Basic Information

ID CVE-2026-29975

Source mitre

Published May 8, 2026 at 00:00

Modified May 8, 2026 at 18:07

Affected Product

Vendor n/a

Product n/a

Version n/a

Affected Versions n/a n/a n/a

CWE Classification

CWE-835

References

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    "published": "2026-05-08T00:00:00.000Z",
    "modified": "2026-05-08T18:07:25.688Z",
    "type": "cve",
    "title": "CVE-2026-29975",
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    "references": "https://github.com/MaJerle/lwjson/tree/develop\nhttps://github.com/MaJerle/lwjson/blob/develop/lwjson/src/lwjson/lwjson_stream.c#L362-L364\nhttps://gist.github.com/dwilliams27/b99fd41be5d6848691797042cbfc1103",
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