CVE-2021-29430

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

1.83% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 77.0% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-04-15 20:35Z5 YR AGO

Last updated

2024-08-03 22:02Z2 YR AGO

Reserved

2021-03-30

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

• CWE-20Improper Input ValidationClass
• CWE-400Uncontrolled Resource ConsumptionClass
• CWE-770Allocation of Resources Without Limits or ThrottlingBase

Data version

5.1

Document digest

d86adeac0792ec5ef7494d9bcc2a71a8ed948588a7d759f5201d1fab15125c4e

• pypi.orghttps://pypi.org/project/matrix-sydent/x_refsource_MISC
• github.comhttps://github.com/matrix-org/sydent/security/advisories/GHSA-wmg4-8cp2-hpg9x_refsource_CONFIRM
• github.comhttps://github.com/matrix-org/sydent/commit/89071a1a754c69a50deac89e6bb74002d4cda19dx_refsource_MISC
• github.comhttps://github.com/matrix-org/sydent/commit/0523511d2fb40f2738f8a8549868f44b96e5dab7x_refsource_MISC
• github.comhttps://github.com/matrix-org/sydent/commit/f56eee315b6c44fdd9f6aa785cc2ec744a594428x_refsource_MISC
• github.comhttps://github.com/matrix-org/sydent/releases/tag/v2.3.0x_refsource_MISC