CVE-2022-4891

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

1.38% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 72.1% 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

2023-01-17 19:58Z3 YR AGO

Last updated

2024-08-03 01:55Z2 YR AGO

Reserved

2023-01-16

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Low (CVSS 3.5)

CNA CVSS vector

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

Weaknesses

• CWE-1333Inefficient Regular Expression ComplexityBase

Data version

5.1

Document digest

6f0ccfd3ea985596e0ea518acced4c8345fe6135c1d0839093e4ab5e80c25332

• vuldb.comhttps://vuldb.com/?id.218452vdb-entrytechnical-description
• vuldb.comhttps://vuldb.com/?ctiid.218452signaturepermissions-required
• github.comhttps://github.com/sisimai/rb-sisimai/pull/244issue-tracking
• gist.githubusercontent.comhttps://gist.githubusercontent.com/gmcabrita/e5dc0332473fc2e3a7a407434c8d21c7/raw/00b12035e5e1b685469f143b94301a50306376ba/example.htmlexploit
• github.comhttps://github.com/sisimai/rb-sisimai/commit/51fe2e6521c9c02b421b383943dc9e4bbbe65d4epatch
• github.comhttps://github.com/sisimai/rb-sisimai/releases/tag/v4.25.14p12patch