High severity · published Aug 5, 2026
CVE-2026-48911
Apache Answer: Unauthenticated OAuth Email-Binding Account Takeover via Existing User Confirmation Flow
7.5
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 47% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AA
Apache Answer · Apache Software Foundation
through 2.0.1 · source: vendor
AN
Answer · Apache
before 2.0.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-48911
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-48911
Mailing List
https://lists.apache.org/thread/mrlwtdnhqqgfbchjgq6rffkz67o8wyv8
Mailing List
http://www.openwall.com/lists/oss-security/2026/08/05/10
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