01 Record
CVE-2026-118659
@happy-dom/server-renderer: ServerRendererServer Target-Origin Bypass SSRF / Open Proxy
HighPUBLISHEDCNA: GitHub_M
CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
02 Description
@happy-dom/server-renderer: ServerRendererServer Target-Origin Bypass SSRF / Open Proxy
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:H/I:N/A:N
- NVD analysis status
- Received. NVD last modified this record on 2026-10-28.
- 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
- 2026-10-28 20:20Z14 HR AGO
- Last updated
- 2026-10-28 20:20Z14 HR AGO
- Reserved
- 2026-10-28
- 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:H/I:N/A:N
- Weaknesses
- CWE-918Server-Side Request Forgery (SSRF)Base
- Data version
- 5.2
- Document digest
- 7a2ff1483245b53a1d4a51f18959bbe1810c42997619add43f97b2661f6f4aae
05 Affected products
VendorProductVersionsPlatforms
06 References
- github.comhttps://github.com/capricorn86/happy-dom/security/advisories/GHSA-pmf4-3xr3-xjhg
- github.comhttps://github.com/capricorn86/happy-dom/pull/2520
- github.comhttps://github.com/capricorn86/happy-dom/commit/1f3ffdf634231361de1a2acb629b4fe8ee1bd85d
- github.comhttps://github.com/capricorn86/happy-dom/releases/tag/v21.0.2