How severe is CVE-2025-4639?

CVE-2025-4639 has a CVSS 4.0 base score of 8.8, rated high severity.

Is CVE-2025-4639 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-4639?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-4639 have an EU (EUVD) identifier?

Yes. CVE-2025-4639 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-14921.

When was CVE-2025-4639 published?

CVE-2025-4639 was published on 2025-05-14 and last updated on 2026-06-17.

CVE-2025-4639

CVE-2025-4639 is a high-severity vulnerability with a CVSS 4.0 base score of 8.8. 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-611.

Key facts

Severity: High (CVSS 4.0 base score 8.8)
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-14921
Weakness: CWE-611
Published: 2025-05-14
Last modified: 2026-06-17

Description

CWE-611 Improper Restriction of XML External Entity Reference in the getDocumentBuilder() method of WebDav servlet in Peergos. This issue affects Peergos through version 1.1.0.

Frequently asked questions

What is CVE-2025-4639?: CWE-611 Improper Restriction of XML External Entity Reference in the getDocumentBuilder() method of WebDav servlet in Peergos. This issue affects Peergos through version 1.1.0.
How severe is CVE-2025-4639?: CVE-2025-4639 has a CVSS 4.0 base score of 8.8, rated high severity.
Is CVE-2025-4639 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-4639?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-4639 have an EU (EUVD) identifier?: Yes. CVE-2025-4639 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-14921.
When was CVE-2025-4639 published?: CVE-2025-4639 was published on 2025-05-14 and last updated on 2026-06-17.

References

https://github.com/Peergos/Peergos/pull/1267

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CVE-2018-1000838 — Critical (CVSS 10.0): autopsy version <= 4.9.0 contains a XML External Entity (XXE) vulnerability in CaseMetadata XML Parser that can result…
CVE-2018-1000837 — Critical (CVSS 10.0): UML Designer version <= 8.0.0 contains a XML External Entity (XXE) vulnerability in XML parser for plugins that can…
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