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
06 References
- github.comhttps://github.com/facelessuser/soupsieve/security/advisories/GHSA-mmhr-3c5m-f64f
- github.comhttps://github.com/facelessuser/soupsieve/pull/351
- github.comhttps://github.com/facelessuser/soupsieve/commit/ff1a5ce7e5addc31626d7b6053511fecdb4f6320
- github.comhttps://github.com/facelessuser/soupsieve/releases/tag/4.0