CVE-2026-47344 | When ALLOW_INSECURE_RAW_TEXT is enabled, whitespace-variant … | CVSS 2.1 LOW

Description

When ALLOW_INSECURE_RAW_TEXT is enabled, whitespace-variant closing tags (e.g., </style\t>) are not recognized by the sanitizer but accepted by browsers as valid end tags, allowing subsequent content to escape sanitization. This allows bypassing the cross-site scripting prevention mechanism of typo3/html-sanitizer before version 2.3.2.

Metadata

CVE ID: CVE-2026-47344
State: PUBLISHED
Assigner: TYPO3
Reserved: 2026-05-19 12:49 UTC
Published: 2026-06-08 19:03 UTC
Last updated: 2026-06-08 19:50 UTC
Primary CWE: CWE-79
CWE-79 Improper Neutralization of Input During Web Page Gene…
Vendor / Product: TYPO3 / HTML Sanitizer
Sources: cve.org · NVD

Severity & Metrics

2.1 LOW CVSS 4.0

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
TYPO3	HTML Sanitizer	—	0 < 2.3.2

Weakness (CWE)

CWE	Source	Description
CWE-436	cna	CWE-436 Interpretation Conflict
CWE-79	cna	CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS scores (1)

Score	Severity	Version	Source	Vector
2.1	LOW	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

References (2)