How severe is CVE-2026-48166?

CVE-2026-48166 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-48166 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-48166?

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

Does CVE-2026-48166 have an EU (EUVD) identifier?

Yes. CVE-2026-48166 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38393.

When was CVE-2026-48166 published?

CVE-2026-48166 was published on 2026-06-22 and last updated on 2026-06-23.

CVE-2026-48166

CVE-2026-48166 is a medium-severity vulnerability with a CVSS 3.x base score of 5.3. 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-208.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38393
Weakness: CWE-208
Published: 2026-06-22
Last modified: 2026-06-23

Description

Filament is a collection of full-stack components for accelerated Laravel development. From 4.0.0 until 4.11.5 and 5.6.5, the login page has an observable timing discrepancy that allows unauthenticated attackers to enumerate registered email addresses. The impact is limited to disclosing whether an account exists for a given email. This vulnerability is fixed in 4.11.5 and 5.6.5.

Frequently asked questions

What is CVE-2026-48166?: Filament is a collection of full-stack components for accelerated Laravel development. From 4.0.0 until 4.11.5 and 5.6.5, the login page has an observable timing discrepancy that allows unauthenticated attackers to enumerate registered email addresses. The impact is limited to disclosing whether an account exists for a given email. This vulnerability is fixed in 4.11.5 and 5.6.5.
How severe is CVE-2026-48166?: CVE-2026-48166 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-48166 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-48166?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-48166 have an EU (EUVD) identifier?: Yes. CVE-2026-48166 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38393.
When was CVE-2026-48166 published?: CVE-2026-48166 was published on 2026-06-22 and last updated on 2026-06-23.

References

https://github.com/filamentphp/filament/security/advisories/GHSA-5w46-g9pq-wh6f

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