CVE-2026-127088

2FAuth before 9.0.1 Password Reset Poisoning via Host Header

Published Nov 13, 2026 CVSS 4.0 · 8.6 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Description 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.
Title 2FAuth before 9.0.1 Password Reset Poisoning via Host Header
First Time appeared 2fauth
2fauth 2fauth
Weaknesses CWE-640
CPEs cpe:2.3:a:2fauth:2fauth:*:*:*:*:*:*:*:*
Vendors & Products 2fauth
2fauth 2fauth
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'}

cvssV4_0

{'score': 8.6, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Nov 13, 2026, 9:34 AM
Reserved
Nov 12, 2026, 2:14 PM
Status
Received
Published
Nov 13, 2026, 10:18 AM
Modified
Nov 13, 2026, 10:18 AM