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CVE-2021-26929

CVE-2021-26929

EPSS 4.9%
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.
Affected products
n/a · n/a
public PoCs found — 3
cve_referencepacketstormsecurity.com/files/162187/Webmail-Edition-5.2.22-XSS-Remote-Code-Execution.htmlunverifiedcve_referencepacketstormsecurity.com/files/162194/Horde-Groupware-Webmail-5.2.22-Cross-Site-Scripting.htmlunverifiedexploitdbwww.exploit-db.com/exploits/49769unverified
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References
http://packetstormsecurity.com/files/162187/Webmail-Edition-5.2.22-XSS-Remote-Code-Execution.htmlhttp://packetstormsecurity.com/files/162194/Horde-Groupware-Webmail-5.2.22-Cross-Site-Scripting.htmlhttps://github.com/horde/webmail/releaseshttps://lists.debian.org/debian-lts-announce/2021/02/msg00028.htmlhttps://lists.horde.org/archives/announce/2021/001298.htmlhttps://www.alexbirnberg.com/horde-xss.htmlhttps://www.horde.org/apps/webmail