Script execution via CSS page-token sanitization bypass
Published Feb 9, 2021 · Updated Aug 3, 2024
Cross-site scripting in Roundcube Webmail before 1.4.11 allows remote authenticated users to execute script through a crafted HTML email. The rcube_utils::mod_css_styles sanitizer deletes page property token sequences, which can join separated markup into a closing style tag and injected event handler during message rendering. A victim must open the malicious message; the script then runs in the victim's webmail origin and can read or modify data available to that session.
Summary
What happened
Cross-site scripting in Roundcube Webmail before 1.4.11 allows remote authenticated users to execute script through a crafted HTML email. The rcube_utils::mod_css_styles sanitizer deletes page property token sequences, which can join separated markup into a closing style tag and injected event handler during message rendering. A victim must open the malicious message; the script then runs in the victim's webmail origin and can read or modify data available to that session.
The record
- CVE
- CVE-2021-26925
- Published
- Feb 9, 2021
- Updated
- Aug 3, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-79, T1203
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 9, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
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What is affected?
Affected products and versions are unavailable in this record.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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