Path Traversal in Matrix Synapse
CVE-2021-41281
Synapse is a package for Matrix homeservers written in Python 3/Twisted. Prior to version 1.47.1, Synapse instances with the media repository enabled can be tricked into downloading a file from a remote server into an arbitrary directory…
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.015 (71.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Matrix Synapse
- Matrix-org Synapse — versions < 1.47.1
- Fedoraproject Fedora — versions 34, 35
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory, Mitigation)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
- security-advisories@github.com (Third Party Advisory, x_refsource_MISC, Release Notes)
- security-advisories@github.com (x_refsource_FEDORA, vendor-advisory)
- security-advisories@github.com (x_refsource_FEDORA, vendor-advisory)
Frequently asked questions
- What is CVE-2021-41281?
- CVE-2021-41281 is a high-severity vulnerability in Matrix Synapse, classified under Path Traversal. CVSS score: 7.5/10. Published 2021-11-23.
- How severe is CVE-2021-41281?
- High severity. CVSS v3 base score is 7.5 out of 10.