CVE-2018-7556

Severity: critical (CVSS 9.1 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-02-28 · updated 2026-06-17
Weakness: CWE-200

Description

LimeSurvey 2.6.x before 2.6.7, 2.7x.x before 2.73.1, and 3.x before 3.4.2 mishandles application/controller/InstallerController.php after installation, which allows remote attackers to access the configuration file.

Affected products

Debian Linux: 7.0
LimeSurvey: from 2.6.0 before 2.6.7; from 2.7.0 before 2.73.1; from 3.0.0 before 3.4.2 — fixed in 2.6.7, 2.73.1, 3.4.2

How to fix

Upgrade to a fixed version: LimeSurvey 2.6.7, 2.73.1, 3.4.2. Check the vendor advisory for mitigations.

References

https://www.limesurvey.org/about-us/news/2075-limesurvey-security-advisory-02-2018
https://www.limesurvey.org/about-us/news/2075-limesurvey-security-advisory-02-2018

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