cve.bz

CVE-2021-29433

4.3 mediumEPSS 0.9%

Medium (4.3) in matrix sydent. EPSS 0.9% chance of exploitation in the next 30 days. Fixed in matrix-sydent 2.3.0.

Sydent is a reference Matrix identity server. In Sydent versions 2.2.0 and prior, sissing 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. A patch for the vulnerability is in version 2.3.0. No workarounds are known to exist.

Severity

CVSS 3.1

4.3 medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
EPSS
0.9% chance of exploitation in the next 30 days; higher than 60% of CVEs (scores of 2026-10-31)
CWEs
CWE-400, CWE-20
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-pw4v-gr34-2553PyPImatrix-sydent<2.3.02.3.0
PYSEC-2021-24PyPImatrix-sydent<2.3.02.3.0

References

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