CVE-2020-26891
Vulnerability from cvelistv5
Published
2020-10-19 16:47
Modified
2024-08-04 16:03
Severity ?
Summary
AuthRestServlet in Matrix Synapse before 1.21.0 is vulnerable to XSS due to unsafe interpolation of the session GET parameter. This allows a remote attacker to execute an XSS attack on the domain Synapse is hosted on, by supplying the victim user with a malicious URL to the /_matrix/client/r0/auth/*/fallback/web or /_matrix/client/unstable/auth/*/fallback/web Synapse endpoints.
References
cve@mitre.orghttps://github.com/matrix-org/synapse/pull/8444Issue Tracking, Patch, Third Party Advisory
cve@mitre.orghttps://github.com/matrix-org/synapse/releases/tag/v1.21.2Release Notes, Third Party Advisory
cve@mitre.orghttps://github.com/matrix-org/synapse/security/advisories/GHSA-3x8c-fmpc-5rmqPatch, Third Party Advisory
cve@mitre.orghttps://matrix.org/blog/2020/10/15/synapse-1-21-2-released-and-security-advisoryRelease Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/matrix-org/synapse/pull/8444Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/matrix-org/synapse/releases/tag/v1.21.2Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/matrix-org/synapse/security/advisories/GHSA-3x8c-fmpc-5rmqPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://matrix.org/blog/2020/10/15/synapse-1-21-2-released-and-security-advisoryRelease Notes, Vendor Advisory
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

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