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CVE-2026-124432

6.9 mediumEPSS 0.3%

Medium (6.9). EPSS 0.3% estimated probability of exploitation activity in the next 30 days.

On this page
phpMyFAQ 4.1.9 before 4.1.11 and 4.2.0 pre-releases before 4.2.0-beta.3 contain an account enumeration vulnerability in the unauthenticated POST /api/webauthn/prepare-login endpoint, which returns stable stored credential IDs for passkey-registered accounts but an md5(time())-derived fallback ID otherwise. Unauthenticated attackers can compare allowCredentials IDs from requests sent more than one second apart, without rate limiting, to identify existing passkey-registered accounts and their credential IDs.

Severity

CVSS 4.0

6.9 medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

CVSS 3.1

7.3 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
EPSS
0.3% estimated probability of exploitation activity in the next 30 days; 25th percentile. Scored 2026-11-10. A forecast for this CVE across the internet, not for your own systems.
CISA's assessment (SSVC)
Exploitation: PoC · Automatable: yes · Technical impact: partial, assessed 2026-11-09. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
CWE
CWE-204 Observable Response Discrepancy
Published
Modified
NVD analysis
Deferred: the NVD does not plan to analyze it
Record from
the NVD, synced

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Attack patterns (CAPEC)

  • CAPEC-331 ICMP IP Total Length Field Probe Likelihood: Medium · Severity: Low
  • CAPEC-332 ICMP IP 'ID' Field Error Message Probe Likelihood: Medium · Severity: Low
  • CAPEC-541 Application Fingerprinting Severity: Low
  • CAPEC-580 System Footprinting Likelihood: Low · Severity: Low

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

References

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