CVE-2026-84307Network attack vectorHinoki check available

Password validity disclosure via premature MFA challenge

Published Sep 1, 2026 · Updated Sep 2, 2026

Observable response discrepancy in Filament 4.0.0 through 4.12.4 and 5.0.0 through 5.7.4 allows remote attackers to confirm passwords. Login.php renders the MFA challenge after a valid password but before canAccessPanel() denies panel access, while an invalid password returns the generic failure. The oracle applies only to MFA-enabled accounts denied panel access; it creates no session, and email MFA also sends the account holder a login code.

CVSS severity3.7
Low
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Observable response discrepancy in Filament 4.0.0 through 4.12.4 and 5.0.0 through 5.7.4 allows remote attackers to confirm passwords. Login.php renders the MFA challenge after a valid password but before canAccessPanel() denies panel access, while an invalid password returns the generic failure. The oracle applies only to MFA-enabled accounts denied panel access; it creates no session, and email MFA also sends the account holder a login code.

The record

CVE
CVE-2026-84307
Published
Sep 1, 2026
Updated
Sep 2, 2026
Vendor
Filament
Product
Filament
Classifications
CWE-204, T1110.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 4.0.0, < 4.12.5
  2. Affected versionversion=>= 5.0.0, < 5.7.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Filament · Filamentversion=>= 4.0.0, < 4.12.5; version=>= 5.0.0, < 5.7.5

Published CVSS scores

3.7GitHubCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-204Observable Response Discrepancy
T1110.001Password Guessing

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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