CVE-2021-26929

Katalog CVE

CVSS 6.1 · Medium EPSS 4,9%

Kerentanan Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') pada horde groupware, debian linux. Skor CVSS 3.1 6.1 (Medium) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

14 Februari 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

6.1 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

EPSS (30 hari)

4,9% peluang dieksploitasi; lebih tinggi dari 91,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://lists.horde.org/archives/announce/2021/001298.html mailing list · advisory vendor
• https://www.horde.org/apps/webmail advisory vendor
• http://packetstormsecurity.com/files/162187/Webmail-Edition-5.2.22-XSS-Remote-Code-Execution.html exploit · advisory pihak ketiga · vdb entry
• http://packetstormsecurity.com/files/162194/Horde-Groupware-Webmail-5.2.22-Cross-Site-Scripting.html advisory pihak ketiga
• https://github.com/horde/webmail/releases advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2021/02/msg00028.html mailing list · advisory pihak ketiga
• https://www.alexbirnberg.com/horde-xss.html exploit · advisory pihak ketiga