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MitreCVE-2021-26929

HistoryFeb 14, 2021 - 4:15 a.m.

CVE-2021-26929

2021-02-1404:15:12

CWE-79

mitre

web.nvd.nist.gov

122

cve-2021-26929

xss

security issue

horde groupware webmail edition

javascript

nvd

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:N/I:P/A:N

CVSS3

6.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

AI Score

5.8

Confidence

High

EPSS

0.022

Percentile

89.4%

JSON

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

Nvd

Node

hordegroupwareRange≤5.2.22webmail

Node

debiandebian_linuxMatch9.0

VendorProductVersionCPE
hordegroupware*cpe:2.3:a:horde:groupware:*:*:*:*:webmail:*:*:*
debiandebian_linux9.0cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*