VDB
CVE-2021-26929
CVE-2021-26929
PUBLISHED
CVSS 6.099999904632568 MEDIUM
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.
EPSS 4.94% · 91.5th percentile
Risk Scores
CVSS 3.1
6.099999904632568
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS Score
4.94%
91.5th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:18.04:LTS | php-horde-text-filter | 0, 2.3.5-1, 2.3.5-1ubuntu1 |
| Ubuntu:16.04:LTS | php-horde-text-filter | 0, 2.3.2-1, 2.3.2-2 |
Timeline
- Feb 14, 2021 CVE Published
- Apr 14, 2021 PoC Published
- Apr 14, 2021 EPSS Score
- Apr 15, 2021 PoC Published
- Feb 4, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- Nov 15, 2022 EPSS Score
- Mar 7, 2023 EPSS Score
- Aug 3, 2024 CVE Updated
- Nov 14, 2024 PoC Published
- Dec 4, 2024 EPSS Score
- Dec 17, 2024 EPSS Score
References
- https://ubuntu.com/security/CVE-2021-26929 third-party-advisory
- https://lists.horde.org/archives/announce/2021/001298.html third-party-advisory
- https://github.com/horde/Text_Filter/commit/c26f938854c36b981558a3b1b9b2f81403cff60e third-party-advisory
- https://github.com/horde/Text_Filter/commit/a2f67da064d7a91440b7a2448e56a6387ab94c67 third-party-advisory
- https://www.alexbirnberg.com/horde-xss.html third-party-advisory
- https://github.com/horde/webmail/releases third-party-advisory
- https://www.horde.org/apps/webmail third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2021-26929 third-party-advisory