What is CVE-2021-35488?

CVE-2021-35488 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-2021-35488?

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

Is CVE-2021-35488 known to be exploited?

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

XSS in Thruk

CVE-2021-35488

Thruk 2.40-2 allows /thruk/#cgi-bin/status.cgi?style=combined&title={TITLE] Reflected XSS via the host or title parameter. An attacker could inject arbitrary JavaScript into status.cgi. The payload would be triggered every time an authenticated user browses the page containing it.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.028 (85.6th 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-2021-35488?: CVE-2021-35488 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-2021-35488?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2021-35488 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.