Medium severity · published Jun 9, 2026
CVE-2026-34031
Apache Answer: The custom avatar was not properly validated
6.5
CVSS
0.4%
EPSS
No
On KEV
Description
Unrestricted Upload of File with Dangerous Type vulnerability in Apache Answer.
This issue affects Apache Answer: through 2.0.0.
The server did not sufficiently validate user-supplied image URLs, allowing arbitrary external content to be embedded as profile images, which could expose users to unintended external requests and tracking by third-party servers.
Users are recommended to upgrade to version 2.0.1, which fixes the issue.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% 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 2.0.0 · source: vendor
AN
Answer · Apache
before 2.0.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-34031
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-34031
Mailing List
https://lists.apache.org/thread/rwtxy39t54to9kv3dqtbjsbdpyk4jkd2
Mailing List
http://www.openwall.com/lists/oss-security/2026/06/09/4
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