How severe is CVE-2025-63260?

CVE-2025-63260 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-63260 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.

What products are affected by CVE-2025-63260?

CVE-2025-63260 affects Syncfusion. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-63260?

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

Does CVE-2025-63260 have an EU (EUVD) identifier?

Yes. CVE-2025-63260 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208909.

When was CVE-2025-63260 published?

CVE-2025-63260 was published on 2026-03-20 and last updated on 2026-07-05.

CVE-2025-63260

CVE-2025-63260 is a medium-severity vulnerability in Syncfusion with a CVSS 3.x base score of 5.4. 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 5.4)
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-208909
Weakness: CWE-79
Affected product: Syncfusion
Published: 2026-03-20
Last modified: 2026-07-05

Description

SyncFusion 30.1.37 is vulnerable to Cross Site Scripting (XSS) via the Document-Editor reply to comment field and Chat-UI Chat message.

Frequently asked questions

What is CVE-2025-63260?: SyncFusion 30.1.37 is vulnerable to Cross Site Scripting (XSS) via the Document-Editor reply to comment field and Chat-UI Chat message.
How severe is CVE-2025-63260?: CVE-2025-63260 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-63260 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.
What products are affected by CVE-2025-63260?: CVE-2025-63260 affects Syncfusion. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-63260?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-63260 have an EU (EUVD) identifier?: Yes. CVE-2025-63260 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208909.
When was CVE-2025-63260 published?: CVE-2025-63260 was published on 2026-03-20 and last updated on 2026-07-05.

References

https://pentest-tools.com/PTT-2025-023-Multiple-Stored-XSS.pdf

EU advisories (EUVD)

http://syncfusion.com

Affected products (1)

cpe:2.3:a:syncfusion:syncfusion:30.1.37:*:*:*:*:*:*:*

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