How severe is CVE-2025-53543?

CVE-2025-53543 has a CVSS 3.x base score of 4.2, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2025-53543 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-53543?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-53543 have an EU (EUVD) identifier?

Yes. CVE-2025-53543 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-20317.

When was CVE-2025-53543 published?

CVE-2025-53543 was published on 2025-07-07 and last updated on 2026-06-17.

CVE-2025-53543

CVE-2025-53543 is a medium-severity vulnerability with a CVSS 3.x base score of 4.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.2)
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-20317
Weakness: CWE-79
Published: 2025-07-07
Last modified: 2026-06-17

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.

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.
How severe is CVE-2025-53543?: CVE-2025-53543 has a CVSS 3.x base score of 4.2, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2025-53543 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-53543?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-53543 have an EU (EUVD) identifier?: Yes. CVE-2025-53543 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-20317.
When was CVE-2025-53543 published?: CVE-2025-53543 was published on 2025-07-07 and last updated on 2026-06-17.

References

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

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