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CVE-2026-52772
Published:July 09, 2026
Updated:August 27, 2026
Commit "e6b66aa" ("fix(bazar): leave the twig escape placeholder as is", 2026-05-19) recognised that emitting "field.label" through Twig's "raw('html')" filter into an HTML attribute is unsafe — Twig's "raw" marker suppresses the attribute auto-escape, "striptags" removes "<…>" tags but not """, so a label containing """ can break out of the attribute and inject event-handler attributes. The commit fixed "tools/bazar/templates/inputs/text.twig:19" and "tools/bazar/templates/inputs/textarea.twig:3". At least seven additional templates have the same pattern and were not touched by the fix: - "tools/bazar/templates/inputs/range.twig:19" — "placeholder="{{ field.label|raw('html')|striptags }}"" - "tools/bazar/templates/inputs/email.twig:13" — "placeholder="{{ field.label|raw('html')|striptags }}"" - "tools/bazar/templates/layouts/input.twig:7" — "title="{{ field.hint|raw('html') }}" alt="{{ field.hint|raw('html') }}"" - "tools/bazar/templates/inputs/textarea.twig:14" — same "title="/"alt=" pattern (the commit only fixed line 3, line 14 remains) - "tools/bazar/templates/inputs/user.twig:41, 55" — same - "tools/bazar/templates/inputs/bookmarklet.twig:4" — same - "tools/bazar/templates/layouts/input.twig:9", "tools/bazar/templates/layouts/field.twig:5", "tools/bazar/templates/inputs/subscribe.twig:16", "tools/bazar/templates/inputs/linked-entry.twig:4", "tools/bazar/templates/inputs/textarea.twig:16", "tools/bazar/templates/inputs/bookmarklet.twig:6" — "{{ field.label|raw }}" outside an attribute (label-body), with no "striptags" at all, so direct tag injection ("<img src=x onerror=…>") executes The "layouts/input.twig" and "layouts/field.twig" files are base layouts inherited by every Bazar field type, so a single malicious "field.hint" reaches into every form that uses that field.
Affected Packages
https://github.com/YesWiki/yeswiki.git (GITHUB):
Affected version(s) >=v4.1.0 <v4.6.6
Fix Suggestion:
Update to version v4.6.6
yeswiki/yeswiki (PHP):
Affected version(s) >=dev-aceditor-fix <v4.6.6
Fix Suggestion:
Update to version v4.6.6
yeswiki/yeswiki (PHP):
Affected version(s) >=dev-aceditor-fix <v4.6.6
Fix Suggestion:
Update to version v4.6.6
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CVSS v4
Base Score:
5.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Encoding or Escaping of Output