Snyk has a published code exploit for this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learningUpgrade Debian:9
php-horde-text-filter
to version 2.3.5-1+deb9u1 or higher.
Note: Versions mentioned in the description apply only to the upstream php-horde-text-filter
package and not the php-horde-text-filter
package as distributed by Debian
.
See How to fix?
for Debian:9
relevant fixed versions and status.
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.