CVE-2025-53543: XSS (CVSS 4.2)

Description

Kestra is an event-driven orchestration platform. The error message in execution "Overview" tab is vulnerable to stored XSS due to improper handling of HTTP response received. This vulnerability is fixed in 0.22.0.

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CVSS v3.1 Score

4.2

MEDIUM

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

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

References

Other References

https://github.com/kestra-io/kestra/security/advisories/GHSA-qpj4-4r6r-wvf4

Frequently Asked Questions

What is CVE-2025-53543? +

Kestra is an event-driven orchestration platform. The error message in execution "Overview" tab is vulnerable to stored XSS due to improper handling of HTTP response received. This vulnerability is fixed in 0.22.0. It has a CVSS v3.1 base score of 4.2 (MEDIUM).

How severe is CVE-2025-53543? +

CVE-2025-53543 has a CVSS v3.1 score of 4.2 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

How do I check if I'm vulnerable to CVE-2025-53543? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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