CVE-2018-17984
An unanchored /[a-z]{2}/ regular expression in ISPConfig before 3.1.13 makes it possible to include arbitrary files, leading to code execution.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.37%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.0
- 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.37% probability · 89th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-185
- Affected
- ispconfig/ispconfig
- Source
- cve@mitre.org
EPSS 3.4% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://0x09al.github.io/security/ispconfig/exploit/vulnerability/2018/08/20/bug-or-backdoor-ispconfig-rce.htmlExploit, Third Party Advisory
- https://github.com/0x09AL/0x09al.github.io/blob/master/_posts/2018-08-20-bug-or-backdoor-ispconfig-rce.markdownExploit, Third Party Advisory
- https://www.ispconfig.org/blog/ispconfig-3-1-13-released-important-security-bugfix/Vendor Advisory
- https://0x09al.github.io/security/ispconfig/exploit/vulnerability/2018/08/20/bug-or-backdoor-ispconfig-rce.htmlExploit, Third Party Advisory
- https://github.com/0x09AL/0x09al.github.io/blob/master/_posts/2018-08-20-bug-or-backdoor-ispconfig-rce.markdownExploit, Third Party Advisory
- https://www.ispconfig.org/blog/ispconfig-3-1-13-released-important-security-bugfix/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.