What’s Vulnerable › Vulnerabilities

CVE-2020-8035

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-05-18 · updated 2026-06-17
• Weakness: CWE-79

Description

The image view functionality in Horde Groupware Webmail Edition before 5.2.22 is affected by a stored Cross-Site Scripting (XSS) vulnerability via an SVG image upload containing a JavaScript payload. An attacker can obtain access to a victim's webmail account by making them visit a malicious URL.

Affected products

• Horde Groupware: before 5.2.22 — fixed in 5.2.22

How to fix

Upgrade to a fixed version: Horde Groupware 5.2.22. Check the vendor advisory for mitigations.

References

• https://github.com/horde/base/blob/c00f2fdb222055fb2ccb6d53b5b5240c0a7d2a75/docs/CHANGES
• https://lists.debian.org/debian-lts-announce/2020/05/msg00035.html
• https://lists.horde.org/archives/announce/2020/001290.html
• https://github.com/horde/base/blob/c00f2fdb222055fb2ccb6d53b5b5240c0a7d2a75/docs/CHANGES
• https://lists.debian.org/debian-lts-announce/2020/05/msg00035.html
• https://lists.horde.org/archives/announce/2020/001290.html

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