What’s Vulnerable › Vulnerabilities

CVE-2018-21020

• Severity: high (CVSS 7.5 v3.1)
• 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: 2019-10-08 · updated 2026-06-17
• Weakness: CWE-20

Description

In very rare cases, a PHP type juggling vulnerability in centreonAuth.class.php in Centreon Web before 2.8.27 allows attackers to bypass authentication mechanisms in place.

Affected products

• Centreon: before 2.8.27 — fixed in 2.8.27

How to fix

Upgrade to a fixed version: Centreon 2.8.27. Check the vendor advisory for mitigations.

References

• http://www.openwall.com/lists/oss-security/2019/10/09/2
• https://github.com/centreon/centreon/pull/7084
• https://www.openwall.com/lists/oss-security/2019/10/08/1
• http://www.openwall.com/lists/oss-security/2019/10/09/2
• https://github.com/centreon/centreon/pull/7084
• https://www.openwall.com/lists/oss-security/2019/10/08/1

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