SB2026090760 - Memory leak in ultrajson

Description

This security bulletin contains information about 1 vulnerability.

1) Memory leak (CVE-ID: N/A)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

CVSSv4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to missing release of memory after effective lifetime in ultrajson serialization functions when processing data with a default handler that recursively returns unserializable objects. A remote attacker can cause the default handler to recursively return unserializable objects to cause a denial of service.

Remediation

Install update from vendor's website.

References

• https://github.com/ultrajson/ultrajson/security/advisories/GHSA-8g3h-c45c-7pg3
• https://github.com/ultrajson/ultrajson/commit/12492c2deb0e60ac66da40dc15f06ba967ed3e0a