What is CVE-2023-32323?

CVE-2023-32323 is a medium-severity vulnerability in Matrix Synapse, classified under Improper Input Validation. CVSS score: 5.0/10. Published 2023-05-26.

How severe is CVE-2023-32323?

Medium severity. CVSS v3 base score is 5.0 out of 10.

Improper input validation in Matrix Synapse

CVE-2023-32323

Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. A malicious user on a Synapse homeserver X with permission to create certain state events can disable outbound federation from X to an arbitra…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.010 (58.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L.

Affected products

Matrix Synapse
Matrix-org Synapse — versions < 1.74.0

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

security-advisories@github.com (x_refsource_CONFIRM, Mitigation, Vendor Advisory)
security-advisories@github.com (Exploit, x_refsource_MISC, Issue Tracking)
security-advisories@github.com (Patch, x_refsource_MISC)
security-advisories@github.com

Frequently asked questions

What is CVE-2023-32323?: CVE-2023-32323 is a medium-severity vulnerability in Matrix Synapse, classified under Improper Input Validation. CVSS score: 5.0/10. Published 2023-05-26.
How severe is CVE-2023-32323?: Medium severity. CVSS v3 base score is 5.0 out of 10.