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01 Record

CVE-2026-115895

Happy DOM: Incomplete fix for CVE-2026-33943: unsanitized import alias leads to host code execution

HighPUBLISHEDCNA: GitHub_M
CNA base score8.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

02 Description

Happy DOM: Incomplete fix for CVE-2026-33943: unsanitized import alias leads to host code execution

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
0.36% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 30.2% of scored records. A rank, not a probability.
NVD base score
8.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD analysis status
Awaiting Analysis. NVD last modified this record on 2026-10-26.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

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
2026-10-23 21:32Z6 DAYS AGO
Last updated
2026-10-23 21:32Z6 DAYS AGO
Reserved
2026-10-23
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
High (CVSS 8.8)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses
  • CWE-94Improper Control of Generation of Code ('Code Injection')Base
Data version
5.2
Document digest
10c39c0d017a24b30d065e9a8c9e746afc503b30e1ccd0c6e104b158a8e7e74e

05 Affected products

VendorProductVersionsPlatforms
capricorn86happy-dom>= 17.0.0, < 21.0.4—

06 References