How severe is CVE-2025-55201?

CVE-2025-55201 has a CVSS 4.0 base score of 8.5, rated high severity.

Is CVE-2025-55201 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-55201?

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-2025-55201 have an EU (EUVD) identifier?

Yes. CVE-2025-55201 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25132.

When was CVE-2025-55201 published?

CVE-2025-55201 was published on 2025-08-18 and last updated on 2026-06-17.

CVE-2025-55201

CVE-2025-55201 is a high-severity vulnerability with a CVSS 4.0 base score of 8.5. 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-22.

Key facts

Severity: High (CVSS 4.0 base score 8.5)
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-25132
Weakness: CWE-22
Published: 2025-08-18
Last modified: 2026-06-17

Description

Copier library and CLI app for rendering project templates. Prior to 9.9.1, a safe template can currently read and write arbitrary files because Copier exposes a few pathlib.Path objects in the Jinja context which have unconstrained I/O methods. This effectively renders the security model w.r.t. filesystem access useless. This vulnerability is fixed in 9.9.1.

Frequently asked questions

What is CVE-2025-55201?: Copier library and CLI app for rendering project templates. Prior to 9.9.1, a safe template can currently read and write arbitrary files because Copier exposes a few pathlib.Path objects in the Jinja context which have unconstrained I/O methods. This effectively renders the security model w.r.t. filesystem access useless. This vulnerability is fixed in 9.9.1.
How severe is CVE-2025-55201?: CVE-2025-55201 has a CVSS 4.0 base score of 8.5, rated high severity.
Is CVE-2025-55201 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-55201?: 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-2025-55201 have an EU (EUVD) identifier?: Yes. CVE-2025-55201 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25132.
When was CVE-2025-55201 published?: CVE-2025-55201 was published on 2025-08-18 and last updated on 2026-06-17.

References

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