How severe is CVE-2026-25847?

CVE-2026-25847 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2026-25847 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-25847?

CVE-2026-25847 affects Jetbrains Pycharm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-25847?

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-2026-25847 have an EU (EUVD) identifier?

Yes. CVE-2026-25847 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6391.

When was CVE-2026-25847 published?

CVE-2026-25847 was published on 2026-02-09 and last updated on 2026-06-17.

CVE-2026-25847

CVE-2026-25847 is a high-severity vulnerability in Jetbrains Pycharm with a CVSS 3.x base score of 8.2. 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: High (CVSS 3.x base score 8.2)
EPSS exploit prediction: 0% (10th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-6391
Weakness: CWE-79
Affected product: Jetbrains Pycharm
Published: 2026-02-09
Last modified: 2026-06-17

Description

In JetBrains PyCharm before 2025.3.2 a DOM-based XSS on Jupyter viewer page was possible

Frequently asked questions

What is CVE-2026-25847?: In JetBrains PyCharm before 2025.3.2 a DOM-based XSS on Jupyter viewer page was possible
How severe is CVE-2026-25847?: CVE-2026-25847 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2026-25847 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-25847?: CVE-2026-25847 affects Jetbrains Pycharm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-25847?: 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-2026-25847 have an EU (EUVD) identifier?: Yes. CVE-2026-25847 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6391.
When was CVE-2026-25847 published?: CVE-2026-25847 was published on 2026-02-09 and last updated on 2026-06-17.

References

https://www.jetbrains.com/privacy-security/issues-fixed/

Affected products (1)

cpe:2.3:a:jetbrains:pycharm:*:*:*:*:*:*:*:*

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