CVE-2026-24735 Apache Answer: Revision API Improper Access Control leads to Information Disclosure
Unauthenticated users can access full revision history of deleted content, exposing sensitive information in Apache Answer.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-24735?
CVE-2026-24735 is a high-severity missing authorization vulnerability in Apache Answer, published on 4 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Exposure of Private Personal Information to an Unauthorized Actor vulnerability in Apache Answer.
This issue affects Apache Answer: through 1.7.1.
An unauthenticated API endpoint incorrectly exposes full revision history for deleted content. This allows unauthorized user to retrieve restricted or sensitive information. Users are recommended to upgrade to version 2.0.0, which fixes the issue.
Weakness: CWE-359
Which versions are affected by CVE-2026-24735?
3 open source packages ship an affected version, including github.com/apache/answer. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/apache/answer Go | All versions | None |
github.com/apache/answer Go | All versions | 2.0.0 |
github.com/apache/answer Go | All versions | 2.0.0 |
Products include Apache Answer.
How do I fix CVE-2026-24735?
Upgrade github.com/apache/answer to 2.0.0 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-24735 being exploited?
There is no known exploitation of CVE-2026-24735 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-5w5r-8xc6-2xhw, GO-2026-4421.