What is CVE-2021-41258?

CVE-2021-41258 is a high-severity vulnerability in Getkirby Kirby, classified under Cross-site Scripting. CVSS score: 7.3/10. Published 2021-11-16.

How severe is CVE-2021-41258?

High severity. CVSS v3 base score is 7.3 out of 10.

XSS in Getkirby Kirby

CVE-2021-41258

Kirby is an open source file structured CMS. In affected versions Kirby's blocks field stores structured data for each block. This data is then used in block snippets to convert the blocks to HTML for use in your templates. We recommend to…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.009 (76.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N.

Affected products

Getkirby Kirby — versions >= 3.5.0, < 3.5.8

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/getkirby/kirby/releases/tag/3.5.8 (x_refsource_MISC)
github.com/getkirby/kirby/security/advisories/GHSA-cq58-r77c-5jjw (x_refsource_CONFIRM)
github.com/getkirby/kirby/pull/3510 (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-41258?: CVE-2021-41258 is a high-severity vulnerability in Getkirby Kirby, classified under Cross-site Scripting. CVSS score: 7.3/10. Published 2021-11-16.
How severe is CVE-2021-41258?: High severity. CVSS v3 base score is 7.3 out of 10.