CVE-2021-26929
Medium
Description
An XSS issue was discovered in Horde Groupware Webmail Edition through 5.2.22 (where the Horde_Text_Filter library before 2.3.7 is used). The attacker can send a plain text e-mail message, with JavaScript encoded as a link or email that is mishandled by preProcess in Text2html.php, because bespoke use of \x00\x00\x00 and \x01\x01\x01 interferes with XSS defenses.
SeverityMedium
CVSS6.1
Exploit probability—
Product
Horde Groupware
PublishedFeb 14, 2021
First seenFeb 14, 2021
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| horde groupware | v ≤ 5.2.22 | — |
| debian debian_linux | 9.0 | — |
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