CVE-2020-8034

Name: CVE-2020-8034
Creator: NVD / NIST
Published: 2020-05-18T17:15:11.053+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.97%

Last modified Jun 17, 2026

CVE-2020-8034 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Gollem before 3.0.13, as used in Horde Groupware Webmail Edition 5.2.22 and other products, is affected by a reflected Cross-Site Scripting (XSS) vulnerability via the HTTP GET dir parameter in the browser functionality, affecting breadcrumb output. An attacker can obtain access to a victim's webmail account by making them visit a malicious URL.. EPSS estimates a 0.97% chance of exploitation in the next 30 days.

Description

Gollem before 3.0.13, as used in Horde Groupware Webmail Edition 5.2.22 and other products, is affected by a reflected Cross-Site Scripting (XSS) vulnerability via the HTTP GET dir parameter in the browser functionality, affecting breadcrumb output. An attacker can obtain access to a victim's webmail account by making them visit a malicious URL.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.97%

57.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Horde	Gollem	< 3.0.13
Horde	Groupware	5.2.22

References

https://github.com/horde/gollem/blob/95b2a4212d734f1b27aaa7a221d2fa1370d2631f/docs/CHANGESRelease Notes, Third Party Advisory
https://github.com/horde/gollem/commits/masterPatch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/05/msg00033.html
https://lists.horde.org/archives/announce/2020/001289.htmlMailing List, Vendor Advisory
https://lists.horde.org/archives/gollem/Week-of-Mon-20200420/001990.htmlMailing List, Vendor Advisory
https://github.com/horde/gollem/blob/95b2a4212d734f1b27aaa7a221d2fa1370d2631f/docs/CHANGESRelease Notes, Third Party Advisory
https://github.com/horde/gollem/commits/masterPatch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/05/msg00033.html
https://lists.horde.org/archives/announce/2020/001289.htmlMailing List, Vendor Advisory
https://lists.horde.org/archives/gollem/Week-of-Mon-20200420/001990.htmlMailing List, Vendor Advisory

Timeline

Published: May 18, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-8034?

How severe is CVE-2020-8034?

CVE-2020-8034 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.97% probability of exploitation in the next 30 days.

How do I fix CVE-2020-8034?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-8034?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST