CVE-2021-42083

MediumCVSS 5.4/10Last modified Jun 17, 2026

Description

An authenticated attacker is able to create alerts that trigger a stored XSS attack.

POC

* go to the alert manager

* open the ITSM tab * add a webhook with the URL/service token value

' -h && id | tee /tmp/ttttttddddssss #' (whitespaces are tab characters)

* click add

* click apply

* create a test alert

* The test alert will run the command

“id | tee /tmp/ttttttddddssss” as root.

* after the test alert inspect

/tmp/ttttttddddssss it'll contain the ids of the root user.

Metrics

CVSS 3.1 5.4/10CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

No affected versions have been published.

Timeline

Published
Jul 10, 2023
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-42083: Medium severity, CVSS 5.4 | Vulnix