What’s Vulnerable › Vulnerabilities

CVE-2021-32746: Possible path traversal by use of the `doc` module

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-07-12 · updated 2026-06-17
• Weakness: CWE-22

Description

Icinga Web 2 is an open source monitoring web interface, framework and command-line interface. Between versions 2.3.0 and 2.8.2, the `doc` module of Icinga Web 2 allows to view documentation directly in the UI. It must be enabled manually by an administrator and users need explicit access permission to use it. Then, by visiting a certain route, it is possible to gain access to arbitrary files readable by the web-server user. The issue has been fixed in the 2.9.0, 2.8.3, and 2.7.5 releases. As a workaround, an administrator may disable the `doc` module or revoke permission to use it from all users.

Affected products

• icinga2: from 2.3.0 before 2.7.5; from 2.8.0 before 2.8.3 — fixed in 2.7.5, 2.8.3

How to fix

Upgrade to a fixed version: icinga2 2.7.5, 2.8.3. Check the vendor advisory for mitigations.

References

• https://github.com/Icinga/icingaweb2/releases/tag/v2.7.5
• https://github.com/Icinga/icingaweb2/releases/tag/v2.8.3
• https://github.com/Icinga/icingaweb2/releases/tag/v2.9.0
• https://github.com/Icinga/icingaweb2/security/advisories/GHSA-cmgc-h4cx-3v43
• https://github.com/Icinga/icingaweb2/releases/tag/v2.7.5
• https://github.com/Icinga/icingaweb2/releases/tag/v2.8.3
• https://github.com/Icinga/icingaweb2/releases/tag/v2.9.0
• https://github.com/Icinga/icingaweb2/security/advisories/GHSA-cmgc-h4cx-3v43

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