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CVE-2026-127088 2FAuth before 9.0.1 Password Reset Poisoning via Host Header

8.6 highEPSS 0.5%

High (8.6) in bubka 2fauth. EPSS 0.5% estimated probability of exploitation activity in the next 30 days.

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2FAuth before 9.0.1 contains a weak password recovery vulnerability that allows unauthenticated attackers to poison reset links by forging the HTTP Host header. Attackers can request password or WebAuthn recovery emails with an attacker-controlled host, capture the victim's token, and take over accounts exposing stored TOTP/HOTP secrets.

Severity

CVSS 4.0

8.6 high
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

8.1 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
EPSS
0.5% estimated probability of exploitation activity in the next 30 days; 46th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
CISA's assessment (SSVC)
Exploitation: none · Automatable: yes · Technical impact: total, assessed 2026-11-13. 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-640 Weak Password Recovery Mechanism for Forgotten Password
OWASP Top 10
A07:2025 Authentication Failures
Published
Modified
Assigned by
VulnCheck (CNA)
NVD analysis
Awaiting analysis
Record from
the NVD, synced

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Affected

Versions

From the CNA's record in the CVE List.

ProductAffected
Bubka 2FAuthbefore 9.0.1

Attack patterns (CAPEC)

  • CAPEC-50 Password Recovery Exploitation Likelihood: Medium · Severity: High

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

References

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