CVE-2026-48911

Apache Answer: Unauthenticated OAuth Email-Binding Account Takeover via Existing User Confirmation Flow

Published Aug 5, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
Insufficient Verification of Data Authenticity vulnerability in Apache Answer.

This issue affects Apache Answer: through 2.0.1.

A missing authorization check in the external-login email binding flow allows unauthenticated attackers to take over arbitrary user accounts by tricking victims into clicking a crafted confirmation link.
Users are recommended to upgrade to version 2.0.2, which fixes the issue.

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
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Apache
Apache answer
Vendors & Products Apache
Apache answer
Type Values Removed Values Added
Description Insufficient Verification of Data Authenticity vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.1. A missing authorization check in the external-login email binding flow allows unauthenticated attackers to take over arbitrary user accounts by tricking victims into clicking a crafted confirmation link. Users are recommended to upgrade to version 2.0.2, which fixes the issue.
Title Apache Answer: Unauthenticated OAuth Email-Binding Account Takeover via Existing User Confirmation Flow
Weaknesses CWE-306
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
Aug 6, 2026, 2:37 PM
Reserved
May 26, 2026, 11:10 AM
Status
Analyzed
Published
Aug 5, 2026, 4:16 PM
Modified
Oct 24, 2026, 4:10 PM