What is CVE-2021-35489?

CVE-2021-35489 is a medium-severity vulnerability in Thruk, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-11-09.

How severe is CVE-2021-35489?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2021-35489 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Thruk

CVE-2021-35489

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 p…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.008 (53.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Thruk — versions 2.40-2
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (x_refsource_MISC, Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2021-35489?: CVE-2021-35489 is a medium-severity vulnerability in Thruk, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-11-09.
How severe is CVE-2021-35489?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2021-35489 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.