CVE-2021-3311

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

2.90% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 85.7% of scored records. A rank, not a probability.

NVD base score

9.8 (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:H/I:H/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

2021-02-05 04:47Z5 YR AGO

Last updated

2024-08-03 16:53Z2 YR AGO

Reserved

2021-01-26

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-613Insufficient Session ExpirationBase

Data version

5.1

Document digest

560e5ad6bde0ce65e909945045eaacb5135c7609dc19bd77fb36a42b0ca42ecd

• octobercms.comhttps://octobercms.com/forum/chan/announcementsx_refsource_MISC
• github.comhttps://github.com/octobercms/library/commit/642f597489e6f644d4bd9a0c267e864cabead024x_refsource_CONFIRM
• anisiosantos.mehttps://anisiosantos.me/october-cms-token-reactivationx_refsource_MISC