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CVE-2025-27609

Icinga Web 2 Vulnerable to Reflected XSS

1.1 LowFix available

Icinga Web 2 is an open source monitoring web interface, framework and command-line interface. A vulnerability in versions prior to 2.11.5 and 2.12.13 allows an attacker to craft a request that, once transmitted to a victim's Icinga Web, allows to embed arbitrary Javascript into it and to act on behalf of that user. This issue has been resolved in versions 2.11.5 and 2.12.3 of Icinga Web 2. As a workaround, those who have Icinga Web 2.12.2 may enable a content security policy in the application settings. Any modern browser with a working CORS implementation also sufficiently guards against the vulnerability.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
Passive

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
None

Exploit likelihood

0.25%Up 0.2 points since Mar 27, 2025
90%50%10%1%

What each source reports

CVE List Score used 1.1

Icinga Web 2 Vulnerable to Reflected XSS

Icinga Web 2 is an open source monitoring web interface, framework and command-line interface. A vulnerability in versions prior to 2.11.5 and 2.12.13 allows an attacker to craft a request that, once transmitted to a victim's Icinga Web, allows to embed arbitrary Javascript into it and to act on behalf of that user. This issue has been resolved in versions 2.11.5 and 2.12.3 of Icinga Web 2. As a workaround, those who have Icinga Web 2.12.2 may enable a content security policy in the application settings. Any modern browser with a working CORS implementation also sufficiently guards against the vulnerability.

Record
CVE-2025-27609
CVSS 4.0
1.1 LowCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U
Weakness
CWE-79
Updated
2026-11-02
EUVDEUVD-2025-8230 1.1

Icinga Web 2 is an open source monitoring web interface, framework and command-line interface. A vulnerability in versions prior to 2.11.5 and 2.12.13 allows an attacker to craft a request that, once transmitted to a victim's Icinga Web, allows to embed arbitrary Javascript into it and to act on behalf of that user. This issue has been resolved in versions 2.11.5 and 2.12.3 of Icinga Web 2. As a workaround, those who have Icinga Web 2.12.2 may enable a content security policy in the application settings. Any modern browser with a working CORS implementation also sufficiently guards against the vulnerability.

Record
EUVD-2025-8230
CVSS 4.0
1.1 LowCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U
Updated
2026-11-02
NVD 1.1

Icinga Web 2 is an open source monitoring web interface, framework and command-line interface. A vulnerability in versions prior to 2.11.5 and 2.12.13 allows an attacker to craft a request that, once transmitted to a victim's Icinga Web, allows to embed arbitrary Javascript into it and to act on behalf of that user. This issue has been resolved in versions 2.11.5 and 2.12.3 of Icinga Web 2. As a workaround, those who have Icinga Web 2.12.2 may enable a content security policy in the application settings. Any modern browser with a working CORS implementation also sufficiently guards against the vulnerability.

Record
CVE-2025-27609
CVSS 4.0
1.1 LowCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSV 1.1

Icinga Web 2 Vulnerable to Reflected XSS

Icinga Web 2 is an open source monitoring web interface, framework and command-line interface. A vulnerability in versions prior to 2.11.5 and 2.12.13 allows an attacker to craft a request that, once transmitted to a victim's Icinga Web, allows to embed arbitrary Javascript into it and to act on behalf of that user. This issue has been resolved in versions 2.11.5 and 2.12.3 of Icinga Web 2. As a workaround, those who have Icinga Web 2.12.2 may enable a content security policy in the application settings. Any modern browser with a working CORS implementation also sufficiently guards against the vulnerability.

Record
CVE-2025-27609
CVSS 4.0
1.1 LowCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U
Weakness
CWE-79
Updated
2026-11-02
OSVDEBIAN-CVE-2025-27609 5.4

Icinga Web 2 is an open source monitoring web interface, framework and command-line interface. A vulnerability in versions prior to 2.11.5 and 2.12.13 allows an attacker to craft a request that, once transmitted to a victim's Icinga Web, allows to embed arbitrary Javascript into it and to act on behalf of that user. This issue has been resolved in versions 2.11.5 and 2.12.3 of Icinga Web 2. As a workaround, those who have Icinga Web 2.12.2 may enable a content security policy in the application settings. Any modern browser with a working CORS implementation also sufficiently guards against the vulnerability.

Record
DEBIAN-CVE-2025-27609
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Updated
2026-11-02
OSVUBUNTU-CVE-2025-27609 1.1

Icinga Web 2 is an open source monitoring web interface, framework and command-line interface. A vulnerability in versions prior to 2.11.5 and 2.12.13 allows an attacker to craft a request that, once transmitted to a victim's Icinga Web, allows to embed arbitrary Javascript into it and to act on behalf of that user. This issue has been resolved in versions 2.11.5 and 2.12.3 of Icinga Web 2. As a workaround, those who have Icinga Web 2.12.2 may enable a content security policy in the application settings. Any modern browser with a working CORS implementation also sufficiently guards against the vulnerability.

Record
UBUNTU-CVE-2025-27609
CVSS 4.0
1.1 LowCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Updated
2026-11-02
OSVopenSUSE-SU-2025:14931-1 No score

icingacli-2.12.4-1.1 on GA media

These are all security issues fixed in the icingacli-2.12.4-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2025:14931-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
icingaweb2
Debian:12
 All versions, plus listed versions
2.11.4-22.11.4-2+deb12u12.11.4-32.12.0-12.12.0-1~exp1
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2.12.1-12.12.2-12.12.4-12.12.4-22.12.5-12.12.5-1~exp12.12.6-12.13.0-12.13.1-12.14.0-1
 None known
icingaweb2
Debian:13
 before 2.12.4-1
2.12.4-1
icingaweb2
Debian:14
 before 2.12.4-1
2.12.4-1
icingaweb2
Ubuntu:16.04:LTS
 All versions, plus listed versions
2.1.0-1ubuntu12.1.0-1ubuntu1.12.1.0-1ubuntu1.2
 None known
icingaweb2
Ubuntu:18.04:LTS
 All versions, plus listed versions
2.4.1-12.4.1-1ubuntu0.1
 None known
icingaweb2
Ubuntu:20.04:LTS
 All versions, plus listed versions
2.7.1-12.7.3-1
 None known
icingaweb2
Ubuntu:22.04:LTS
 All versions, plus listed versions
2.8.2-22.9.3-12.9.4-12.9.5-1
 None known
icingaweb2
Ubuntu:24.04:LTS
 All versions, plus listed versions
2.11.4-32.12.0-12.12.1-1
 None known
icingaweb2
Ubuntu:25.10
 All versions, plus listed versions
2.12.2-12.12.4-12.12.4-2
 None known
icingaweb2
openSUSE:Tumbleweed
From an advisory covering 4 CVEs
 before 2.12.4-1.1
2.12.4-1.1

History

History
RecordedChangedSources
affected, facts
first indexedCVE List, EUVD, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-27609 is a low vulnerability (CVSS 1.1) in Icinga Web 2, published March 26, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.25%, the 16th percentile. Fixed in icingaweb2 2.12.4-1.

References

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