PyPI/matrix-synapse CVE-2023-42453: low 3.1, EPSS 0.78%

matrix-synapse vulnerable to improper validation of receipts allows forged read receipts

Action: Upgrade matrix-synapse to 1.93.0 or later.

pip install matrix-synapse==1.93.0

Affected

Fixed versions

Sources

• osv: GHSA-7565-cq32-vx2x
• https://github.com/matrix-org/synapse/security/advisories/GHSA-7565-cq32-vx2x
• https://nvd.nist.gov/vuln/detail/CVE-2023-42453
• https://github.com/matrix-org/synapse/pull/16327
• https://github.com/matrix-org/synapse/commit/63d28a88c1d18c64ea7e23b6dd7483e6d5dcf881
• https://github.com/matrix-org/synapse
• https://github.com/pypa/advisory-database/tree/main/vulns/matrix-synapse/PYSEC-2023-180.yaml
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2AFB2Y3S2VCPCN5P2XCZTG24MBMZ7DM4
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/65QPC55I4D27HIZP7H2NQ34EOXHPP4AO
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/N6P4QULVUE254WI7XF2LWWOGHCYVFXFY
• https://security.gentoo.org/glsa/202401-12

CVE-2023-42453 · published 2023-09-26T19:20:38Z · modified 2026-09-10T03:49:57.892935878Z · JSON