01 Record
CVE-2026-54570
AngleSharp: HTML5 Spec Compliance: mXSS via annotation-xml HTML Integration Point Bypass
MediumPUBLISHEDCNA: GitHub_M
CNA base score6.9 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:N
02 Description
AngleSharp: HTML5 Spec Compliance: mXSS via annotation-xml HTML Integration Point Bypass
03 Exploitation and scoring
- Exploitation
- Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
- SSVC decision
- ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.33% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 25.9% of scored records. A rank, not a probability.
- NVD base score
- 6.9 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:N
- NVD analysis status
- Deferred. NVD last modified this record on 2026-09-18.
- 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
- 2026-08-18 17:39Z2 MO AGO
- Last updated
- 2026-08-18 19:27Z2 MO AGO
- Reserved
- 2026-06-15
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.9)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:N
- Weaknesses
- CWE-80Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)Variant
- Data version
- 5.2
- Document digest
- 9c317abe50305b32d74873d8a93382ba53dacc1f07dd60f5ce4ae65e22c18f98
05 Affected products
VendorProductVersionsPlatforms