How severe is CVE-2025-66844?

CVE-2025-66844 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2025-66844 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-66844?

CVE-2025-66844 affects Getgrav Grav. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-66844?

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

Does CVE-2025-66844 have an EU (EUVD) identifier?

Yes. CVE-2025-66844 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-203400.

When was CVE-2025-66844 published?

CVE-2025-66844 was published on 2025-12-15 and last updated on 2026-06-17.

CVE-2025-66844

Q: What is CVE-2025-66844?

In grav <1.7.49.5, a SSRF (Server-Side Request Forgery) vector may be triggered via Twig templates when page content is processed by Twig and the configuration allows undefined PHP functions to be registered

CVE-2025-66844 is a critical-severity vulnerability in Getgrav Grav with a CVSS 3.x base score of 9.1. 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-918.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-203400
Weakness: CWE-918
Affected product: Getgrav Grav
Published: 2025-12-15
Last modified: 2026-06-17

Description

In grav <1.7.49.5, a SSRF (Server-Side Request Forgery) vector may be triggered via Twig templates when page content is processed by Twig and the configuration allows undefined PHP functions to be registered

Frequently asked questions

What is CVE-2025-66844?: In grav <1.7.49.5, a SSRF (Server-Side Request Forgery) vector may be triggered via Twig templates when page content is processed by Twig and the configuration allows undefined PHP functions to be registered
How severe is CVE-2025-66844?: CVE-2025-66844 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2025-66844 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-66844?: CVE-2025-66844 affects Getgrav Grav. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-66844?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-66844 have an EU (EUVD) identifier?: Yes. CVE-2025-66844 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-203400.
When was CVE-2025-66844 published?: CVE-2025-66844 was published on 2025-12-15 and last updated on 2026-06-17.

References

https://github.com/Yohane-Mashiro/grav_cve/issues/2

Affected products (1)

cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:*

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