CVE-2026-116538

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

0.28% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 21.1% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

Awaiting Analysis. NVD last modified this record on 2026-10-26.

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

2026-10-26 14:59Z2 DAYS AGO

Last updated

2026-10-26 14:59Z2 DAYS AGO

Reserved

2026-10-26

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

Low (CVSS 2.3)

CNA CVSS vector

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

Weaknesses

• CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base

Data version

5.2

Document digest

63cdb35e4ef3a986b565a81951b3b6adb7530e415c8b5dd3438d23501d27ea2a

• github.comPatch Commithttps://github.com/mganss/HtmlSanitizer/commit/96afbc818e64de7571ea17954a05d523e819c56fpatch
• github.comhttps://github.com/mganss/HtmlSanitizer/commit/ab626e7a4f2893f7e9ec0a72779ae19c5ec439a7patch
• github.comhttps://github.com/mganss/HtmlSanitizer/blob/v9.2.995/src/HtmlSanitizer/HtmlSanitizer.cs#L456-L465technical-description
• github.comhttps://github.com/mganss/HtmlSanitizer/blob/v9.2.995/src/HtmlSanitizer/HtmlSanitizer.cs#L555-L583technical-description
• joshua.huhttps://joshua.hu/htmlsanitizer-sanitizedom-body-html-attribute-bypasstechnical-description
• github.comHtmlSanitizer v9.2.1039 Release Noteshttps://github.com/mganss/HtmlSanitizer/releases/tag/v9.2.1039release-notes
• github.comHtmlSanitizer v10.0.1037-beta Release Noteshttps://github.com/mganss/HtmlSanitizer/releases/tag/v10.0.1037-betarelease-notes
• github.comhttps://github.com/mganss/HtmlSanitizerproduct
• www.vulncheck.comVulnCheck Advisory: HtmlSanitizer before 9.2.1039 XSS via SanitizeDom Body and HTML Attributeshttps://www.vulncheck.com/advisories/htmlsanitizer-before-9.2.1039-xss-via-sanitizedom-body-and-html-attributesthird-party-advisory