CVE-2021-35489

6.1 mediumEPSS 0.9%

Medium (6.1) in thruk thruk. EPSS 0.9% chance of exploitation in the next 30 days.

Thruk 2.40-2 allows /thruk/#cgi-bin/extinfo.cgi?type=2&host={HOSTNAME]&service={SERVICENAME]&backend={BACKEND] Reflected XSS via the host or service parameter. An attacker could inject arbitrary JavaScript into extinfo.cgi. The malicious payload would be triggered every time an authenticated user browses the page containing it.

Severity

CVSS 3.1

6.1 medium

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

EPSS: 0.9% chance of exploitation in the next 30 days; higher than 58% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2021-11-09
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

thruk:thruk

References

https://www.gruppotim.it/redteam
https://www.thruk.org/changelog.html
https://www.gruppotim.it/redteam
https://www.thruk.org/changelog.html

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