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Alpine Linux: CVE-2020-26891: Cross-site Scripting

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Alpine Linux: CVE-2020-26891: Cross-site Scripting

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
10/19/2020
Created
08/23/2024
Added
08/22/2024
Modified
10/02/2024

Description

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.

Solution(s)

  • alpine-linux-upgrade-synapse

References

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