CVE-2026-9769

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

8.7 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Received. NVD last modified this record on 2026-08-23.

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.

Published

2026-08-23 13:34Z7 HR AGO

Last updated

2026-08-23 13:34Z7 HR AGO

Reserved

2026-05-27

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

High (CVSS 8.7)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Weaknesses

• CWE-674Uncontrolled RecursionClass

Data version

5.2

Document digest

c8d2401a2b72cca6f7687d27f08192e1f0d9d44518d2eb5d07280a5f21beeed8

• github.comGitHub Security Advisory (GHSA-v7cf-c9rm-wm3j)https://github.com/EmilStenstrom/justhtml/security/advisories/GHSA-v7cf-c9rm-wm3jvendor-advisory
• www.vulncheck.comVulnCheck Advisory: justhtml before 1.10.0 Denial of Service via deeply nested HTMLhttps://www.vulncheck.com/advisories/justhtml-before-denial-of-service-via-deeply-nested-htmlthird-party-advisory