CVE-2021-32746
Possible path traversal by use of the `doc` module
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
5.3
Possible path traversal by use of the `doc` module
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.
- Record
CVE-2021-32746- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-22
- Updated
- 2026-11-02
EUVDEUVD-2021-19518
5.3
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.
- Record
EUVD-2021-19518- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-03
NVD
5.3
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.
- Record
CVE-2021-32746- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:P/I:N/A:N - Weakness
- CWE-22
- Updated
- 2026-11-02
OSVALPINE-CVE-2021-32746
5.3
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.
- Record
ALPINE-CVE-2021-32746- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-03
OSV
5.3
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.
- Record
CVE-2021-32746- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2021-32746
5.3
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.
- Record
DEBIAN-CVE-2021-32746- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2021-32746
5.3
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.
- Record
UBUNTU-CVE-2021-32746- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
icingaweb2Alpine:v3.15 |
before 2.9.0-r0 | 2.9.0-r0 |
icingaweb2Alpine:v3.16 |
before 2.9.0-r0 | 2.9.0-r0 |
icingaweb2Alpine:v3.17 |
before 2.9.0-r0 | 2.9.0-r0 |
icingaweb2Alpine:v3.18 |
before 2.9.0-r0 | 2.9.0-r0 |
icingaweb2Alpine:v3.19 |
before 2.9.0-r0 | 2.9.0-r0 |
icingaweb2Alpine:v3.20 |
before 2.9.0-r0 | 2.9.0-r0 |
icingaweb2Alpine:v3.21 |
before 2.9.0-r0 | 2.9.0-r0 |
icingaweb2Alpine:v3.22 |
before 2.9.0-r0 | 2.9.0-r0 |
icingaweb2Alpine:v3.23 |
before 2.9.0-r0 | 2.9.0-r0 |
icingaweb2Alpine:v3.24 |
before 2.9.0-r0 | 2.9.0-r0 |
Show 11 moreShow less
| Package | Affected | Fixed |
|---|---|---|
icingaweb2Debian:12 |
before 2.8.4-1 | 2.8.4-1 |
icingaweb2Debian:13 |
before 2.8.4-1 | 2.8.4-1 |
icingaweb2Debian:14 |
before 2.8.4-1 | 2.8.4-1 |
icingaweb2Ubuntu:16.04:LTS |
All versions, plus listed versions 2.1.0-1ubuntu12.1.0-1ubuntu1.12.1.0-1ubuntu1.2 |
None known |
icingaweb2Ubuntu:18.04:LTS |
All versions, plus listed versions 2.4.1-12.4.1-1ubuntu0.1 |
None known |
icingaweb2Ubuntu:20.04:LTS |
All versions, plus listed versions 2.7.1-12.7.3-1 |
None known |
icingaweb2Ubuntu:22.04:LTS |
All versions, plus listed versions 2.8.2-22.9.3-12.9.4-12.9.5-1 |
None known |
icingaweb2Ubuntu:24.04:LTS |
All versions, plus listed versions 2.11.4-32.12.0-12.12.1-1 |
None known |
icingaweb2Ubuntu:25.10 |
All versions, plus listed versions 2.12.2-12.12.4-12.12.4-2 |
None known |
icingaweb2Ubuntu:26.10 |
All versions, plus listed versions 2.12.6-12.13.0-12.14.0-1 |
None known |
icingaweb2Ubuntu:26.04:LTS |
All versions, plus listed versions 2.12.4-22.12.5-12.12.6-1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, references | OSV | |
| aliases | EUVD | |
| first indexed | CVE List, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-32746 is a medium vulnerability (CVSS 5.3) in Icinga, published July 12, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.31%, the 70th percentile. Fixed in icingaweb2 2.9.0-r0.
References
github.com/Icinga/icingaweb2/security/advisories/GHSA-cmgc-h4cx-3v43
github.com/Icinga/icingaweb2/releases/tag/v2.7.5
github.com/Icinga/icingaweb2/releases/tag/v2.8.3
github.com/Icinga/icingaweb2/releases/tag/v2.9.0
security.alpinelinux.org/vuln/CVE-2021-32746
security-tracker.debian.org/tracker/CVE-2021-32746
ubuntu.com/security/CVE-2021-32746
cve.org/CVERecord?id=CVE-2021-32746