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GHSA-55wf-5m3q-6jjf

HighCVSS 7.6 / 10
Published Apr 29, 2026·Last modified May 5, 2026
Affected Components(0)

No affected components available

Description

Impact

The vulnerability allows an attacker to inject malicious Javascript into a victim's browser to run it in the context of Icinga Web. The victim needs to visit a specifically prepared website and may have no immediate chance to notice any wrongdoing.

Patches

Version 0.13.1 includes a fix for this. It will be published as part of icinga-php-library version 0.19.2.

Workarounds

Enable the Content-Security-Policy (CSP) in the general configuration of Icinga Web available since version 2.12.0.

References

None

Risk Scores
Base Score
7.6

The vulnerability can be exploited over the network without needing physical access. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker needs high-level or administrative privileges. The attacker needs the user to perform some action, like clicking a link. The vulnerability can affect other systems as well, not just the initial system. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.

Threat Intelligence
7.0

Exploitation activity has been observed. Apply available patches or mitigations urgently.

EPSS
0.26%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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