CVE-2018-17984

An unanchored /[a-z]{2}/ regular expression in ISPConfig before 3.1.13 makes it possible to...

7.8 High

An unanchored /[a-z]{2}/ regular expression in ISPConfig before 3.1.13 makes it possible to include arbitrary files, leading to code execution. This is exploitable by authenticated users who have local filesystem access.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

3.37%Up 1.9 points since Apr 14, 2021

What each source reports

NVD Score used 7.8

Record: CVE-2018-17984
CVSS 3.0: 7.8 HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 4.6 MediumAV:L/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-185
Updated: 2026-11-02

CVE List No score

Record: CVE-2018-17984
Updated: 2026-11-02

EUVDEUVD-2018-9723 No score

Record: EUVD-2018-9723
Updated: 2026-11-03

GitHub AdvisoriesGHSA-8h5j-7xvq-97fq 7.8

An unanchored /[a-z]{2}/ regular expression in ISPConfig before 3.1.13 makes it possible to...

Record: GHSA-8h5j-7xvq-97fq
CVSS 3.0: 7.8 HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-185
Updated: 2026-11-02

Affected products

ispconfig

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-17984 is a high vulnerability (CVSS 7.8) in Ispconfig, published October 4, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.37%, the 88th percentile. No source names a fixed version.