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01 Record

CVE-2026-126190

Soup Sieve: Polynomial-time denial of service in the descendant combinator

HighPUBLISHEDCNA: GitHub_M
CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

02 Description

Soup Sieve: Polynomial-time denial of service in the descendant combinator

03 Exploitation and scoring

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
Not scored by EPSS
EPSS percentile
Not scored by EPSS
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
Received. NVD last modified this record on 2026-11-12.
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.

04 Metadata

Published
2026-11-12 16:54Z27 MIN AGO
Last updated
2026-11-12 16:54Z27 MIN AGO
Reserved
2026-11-10
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-407Inefficient Algorithmic ComplexityClass
Data version
5.2
Document digest
3298445ccac06cbbe16f3ba58b6addcb561568dec211e12dba11c4bb366ec60d

05 Affected products

VendorProductVersionsPlatforms
facelessusersoupsieve< 4.0—

06 References