CVE-2026-34905 Apache Answer: Unlisted Questions Accessible via Direct API Access
Authenticated users can access unlisted questions and related data via direct API endpoints due to missing access controls.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-34905?
CVE-2026-34905 is a medium-severity missing authorization vulnerability in Apache Answer, published on 9 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Answer.
This issue affects Apache Answer: through 2.0.0.
The unlisted question feature did not enforce access restrictions on direct API endpoints, allowing authenticated users to discover and access unlisted questions, their answers, comments, and revision history. Users are recommended to upgrade to version 2.0.1, which fixes the issue.
Weakness: CWE-200
Which versions are affected by CVE-2026-34905?
3 open source packages ship an affected version, including github.com/apache/incubator-answer and github.com/apache/answer. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/apache/incubator-answer Go | All versions | 1.7.2-0.20260509071350-11c80384f13a |
github.com/apache/incubator-answer Go | All versions | 1.7.2-0.20260509071350-11c80384f13a |
github.com/apache/answer Go | All versions | 1.7.2-0.20260509071350-11c80384f13a |
Products include Apache Answer.
How do I fix CVE-2026-34905?
Upgrade github.com/apache/incubator-answer to 1.7.2-0.20260509071350-11c80384f13a or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-34905 being exploited?
There is no known exploitation of CVE-2026-34905 in the wild and no public exploit code.
Other vulnerabilities in Apache Answer
- CVE-2026-60053 Apache Answer: Residual Administrative API Key Access After Role or Account Revocation
- CVE-2024-22393 Apache Answer: Pixel Flood Attack by uploading the large pixel file
- CVE-2026-48834 Apache Answer: Denial of service via crafted Accept-Language header parsing
- CVE-2026-48911 Apache Answer: Unauthenticated OAuth Email-Binding Account Takeover via Existing User Confirmation Flow
- CVE-2026-60023 Apache Answer: Unauthorized disclosure of deleted or pending answer content
Sources
Also known as GHSA-85r2-pvg8-89r9, GO-2026-6152.