Safety vulnerability ID: 49754
The information on this page was manually curated by our Cybersecurity Intelligence Team.
Ujson 5.4.0 includes a fix for CVE-2022-31116: Incorrect handling of invalid surrogate pair characters.
https://github.com/ultrajson/ultrajson/security/advisories/GHSA-wpqr-jcpx-745r
Latest version: 5.9.0
Ultra fast JSON encoder and decoder for Python
UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Affected versions were found to improperly decode certain characters. JSON strings that contain escaped surrogate characters not part of a proper surrogate pair were decoded incorrectly. Besides corrupting strings, this allowed for potential key confusion and value overwriting in dictionaries. All users parsing JSON from untrusted sources are vulnerable. From version 5.4.0, UltraJSON decodes lone surrogates in the same way as the standard library's `json` module does, preserving them in the parsed output. Users are advised to upgrade. There are no known workarounds for this issue. See CVE-2022-31116.
CONFIRM:https://github.com/ultrajson/ultrajson/security/advisories/GHSA-wpqr-jcpx-745r: https://github.com/ultrajson/ultrajson/security/advisories/GHSA-wpqr-jcpx-745r
MISC:https://github.com/ultrajson/ultrajson/commit/67ec07183342589d602e0fcf7bb1ff3e19272687: https://github.com/ultrajson/ultrajson/commit/67ec07183342589d602e0fcf7bb1ff3e19272687
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