CVE-2026-55090 Details
UNDERGOING ENRICHMENT
The CVE is currently being enriched by the Volerion team. The enrichment process results in the association of reference link tags, CVSS, and CPE applicability statement data.
Description
Etherpad is a real-time collaborative editor. Prior to 3.3.0, getHTMLFromAtext in src/node/utils/ExportHtml.ts interpolates values from the exportHtmlAdditionalTagsWithData plugin hook into span data attributes without HTML attribute escaping. A pad editor can place an attacker-controlled value into the attribute pool through moveOpsToNewPool and AttributePool.putAttrib. When a bundled plugin such as ep_font_color or ep_font_size registers the hook, opening the resulting HTML export causes the value to execute as stored cross-site scripting in the Etherpad origin. This issue is fixed in version 3.3.0.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS-B:…Vector:This vulnerability is currently being analyzed.CVSS 3.x Severity and Vector Strings:
VolerionCVSS-B:…Vector:This vulnerability is currently being analyzed.No CVSS 3.x data is available for this CVE.
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Aug 20, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
This vulnerability is currently being analyzed
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 20, 2026 | CVE Modified | CISA-ADP |
| Aug 19, 2026 | New CVE Received | [email protected] |