Published: 05/07/2022 Updated: 07/11/2023

CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10

CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9

VMScore: 445

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

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.

Vulnerable Product	Search on Vulmon	Subscribe to Product
ultrajson project ultrajson
fedoraproject fedora 35
fedoraproject fedora 36

Synopsis Moderate: Red Hat OpenStack Platform 1624 (python-ujson) security update Type/Severity Security Advisory: Moderate Red Hat Insights patch analysis Identify and remediate systems affected by this advisory View affected systems Topic An update for python-ujson is now available for Red Hat OpenStack Platform1624 (Train) f ...

Synopsis Moderate: Red Hat OpenStack Platform 1619 (python-ujson) security update Type/Severity Security Advisory: Moderate Red Hat Insights patch analysis Identify and remediate systems affected by this advisory View affected systems Topic An update for python-ujson is now available for Red Hat OpenStack Platform1619 (Train) f ...

UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 37+ 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 ...

CWE-670 https://github.com/ultrajson/ultrajson/commit/67ec07183342589d602e0fcf7bb1ff3e19272687 https://github.com/ultrajson/ultrajson/security/advisories/GHSA-wpqr-jcpx-745r https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OPPU5FZP3LCTXYORFH7NHUMYA5X66IA7/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NAU5N4A7EUK2AMUCOLYDD5ARXAJYZBD2/https://access.redhat.com/errata/RHSA-2022:8850 https://nvd.nist.gov https://access.redhat.com/security/cve/cve-2022-31116

CVE-2022-31116

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