CVE-2020-8034
CVE-2020-8034 is a medium-severity vulnerability in Horde Gollem with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.
Key facts
- Severity: Medium (CVSS 3.x base score 6.1)
- CVSS v2: 4.3
- EPSS exploit prediction: 1% (58th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: Horde Gollem
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2020-8034?
- 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.
- How severe is CVE-2020-8034?
- CVE-2020-8034 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2020-8034 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-8034?
- CVE-2020-8034 primarily affects Horde Gollem. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2020-8034?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2020-8034 published?
- CVE-2020-8034 was published on 2020-05-18 and last updated on 2026-06-17.
References
- https://github.com/horde/gollem/blob/95b2a4212d734f1b27aaa7a221d2fa1370d2631f/docs/CHANGES
- https://github.com/horde/gollem/commits/master
- https://lists.debian.org/debian-lts-announce/2020/05/msg00033.html
- https://lists.horde.org/archives/announce/2020/001289.html
- https://lists.horde.org/archives/gollem/Week-of-Mon-20200420/001990.html
Affected products (2)
- cpe:2.3:a:horde:gollem:*:*:*:*:*:*:*:*
- cpe:2.3:a:horde:groupware:5.2.22:*:*:*:webmail:*:*:*
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