Advisory Weakness Curation

Denial of service (via resource exhaustion) due to improper input validation in third-party identifier endpoint ### Impact Missing input validation of some parameters on the endpoints used to confirm third-party identifiers could cause excessive use of disk space and memory leading to resource exhaustion. ### Patches The issue is fixed by https://github.com/matrix-org/synapse/pull/9855. ### Workarounds There are no known workarounds. ### References n/a ### For more information If you have any questions or comments about this advisory, email us at security@matrix.org.

Denial of service due to improper input validation in third-party identifier endpoint ### Impact Missing input validation of some parameters on the endpoints used to confirm third-party identifiers could cause excessive use of disk space and memory leading to resource exhaustion. ### Patches The issue is fixed by https://github.com/matrix-org/synapse/pull/9855. ### Workarounds There are no known workarounds. ### References n/a ### For more information If you have any questions or comments about this advisory, email us at security@matrix.org.