What’s Vulnerable › Vulnerabilities

CVE-2026-48911: Apache Answer: Unauthenticated OAuth Email-Binding Account Takeover via Existing User Confirmation Flow

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-05 · updated 2026-10-24
• Weakness: CWE-306

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.

Affected products

• Apache Software Foundation Apache Answer: before 2.0.2 — fixed in 2.0.2

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Answer 2.0.2. Check the vendor advisory for mitigations.

References

• https://lists.apache.org/thread/mrlwtdnhqqgfbchjgq6rffkz67o8wyv8
• http://www.openwall.com/lists/oss-security/2026/08/05/10

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