CVE-2026-34031: Apache Answer: The custom avatar was not properly validated

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-09 · updated 2026-07-23
Weakness: CWE-434

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.

Affected products

Apache Software Foundation Apache Answer: before 2.0.1 — fixed in 2.0.1

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Answer 2.0.1. Check the vendor advisory for mitigations.

References

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