What is CVE-2017-15235?

CVE-2017-15235 is a high-severity vulnerability in Horde Groupware, classified under Direct Request (Forced Browsing). CVSS score: 7.5/10. Published 2017-10-11.

How severe is CVE-2017-15235?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Horde Groupware

CVE-2017-15235

The File Manager (gollem) module 3.0.11 in Horde Groupware 5.2.21 allows remote attackers to bypass Horde authentication for file downloads via a crafted fn parameter that corresponds to the exact filename.

Published 2017-10-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.055 (92.8th percentile), scored 2026-10-24.

Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 92.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.055 · newest: 0.055 · change: 0.000

Affected products

Horde Groupware — versions 5.2.21

Weakness classification (CWE)

CWE-425 — Direct Request (Forced Browsing)

References

blogs.securiteam.com/index.php/archives/3454 (Exploit, Third Party Advisory)
lists.debian.org/debian-lts-announce/2020/08/msg00050.html (mailing-list)

Frequently asked questions

What is CVE-2017-15235?: CVE-2017-15235 is a high-severity vulnerability in Horde Groupware, classified under Direct Request (Forced Browsing). CVSS score: 7.5/10. Published 2017-10-11.
How severe is CVE-2017-15235?: High severity. CVSS v3 base score is 7.5 out of 10.