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.
Does this matter?
A public exploit is published in Exploit-DB and the impact is high, while EPSS rates exploitation at 5.5%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use.
Description
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.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 5.53% probability · 93th percentile
- Public exploits
- 1 in Exploit-DB · first 3 August 2017
- CISA KEV
- Not listed
- Weakness
- CWE-425
- Affected
- horde/groupware
- Source
- cve@mitre.org
EPSS moved from 4.1% on 21 September 2026 to 5.5% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.