CVEvulnerability
CVE-2021-26929
6.1 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2021-02-14
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.1 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CVSS 2.0 ([email protected])
- 4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:P/A:N
- Weaknesses
- CWE-79
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.
Affected configurations
• horde groupware (<= 5.2.22)
• debian debian linux 9.0
Related
Weakness · CWE (1)
- CWE-79 Improper Neutralization of Input During Web Page Generation weakness
References
- http://packetstormsecurity.com/files/162187/Webmail-Edition-5.2.22-XSS-Remote-Code-Execution.html Exploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/162194/Horde-Groupware-Webmail-5.2.22-Cross-Site-Scripting.html Third Party Advisory
- https://github.com/horde/webmail/releases Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/02/msg00028.html Mailing List, Third Party Advisory
- https://lists.horde.org/archives/announce/2021/001298.html Mailing List, Vendor Advisory
- https://www.alexbirnberg.com/horde-xss.html Exploit, Third Party Advisory
- https://www.horde.org/apps/webmail Vendor Advisory
- http://packetstormsecurity.com/files/162187/Webmail-Edition-5.2.22-XSS-Remote-Code-Execution.html Exploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/162194/Horde-Groupware-Webmail-5.2.22-Cross-Site-Scripting.html Third Party Advisory
- https://github.com/horde/webmail/releases Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/02/msg00028.html Mailing List, Third Party Advisory
- https://lists.horde.org/archives/announce/2021/001298.html Mailing List, Vendor Advisory
- https://www.alexbirnberg.com/horde-xss.html Exploit, Third Party Advisory
- https://www.horde.org/apps/webmail Vendor Advisory