Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Network-reachable with no authentication or interaction required; impact is read-only disclosure of restricted content with no integrity or availability effect.
Primary rating from Vendor (apache).
CVSS VectorVendor: apache
Lifecycle Timeline
4DescriptionCVE.org
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Answer.
This issue affects Apache Answer: through 2.0.1.
Deleted or pending answers could be retrieved by unauthorized users through the single-answer read path when the parent question remained visible, exposing answer content that should not have been accessible. Users are recommended to upgrade to version 2.0.2, which fixes the issue.
AnalysisAI
Unauthenticated information disclosure in Apache Answer through 2.0.1 allows any remote user to retrieve deleted or pending answers via the single-answer read API path, provided the parent question remains publicly visible. The flaw bypasses moderation-state access controls, exposing content that was intentionally withheld from public view. No public exploit code or active exploitation has been identified; EPSS at 0.17% (7th percentile) reflects limited real-world exploitation interest despite the high CVSS score.
Technical ContextAI
Apache Answer is an open-source community Q&A platform under the Apache Software Foundation umbrella. The vulnerability stems from an incomplete access control check in the single-answer read endpoint: the server validates the parent question's visibility but fails to check the moderation state (deleted or pending) of the individual answer object being fetched. This maps to CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor), a design-level authorization gap rather than a memory-safety or injection flaw. CPE string cpe:2.3:a:apache_software_foundation:apache_answer:*:*:*:*:*:*:*:* confirms all versions through 2.0.1 are affected. Because answer IDs are likely sequential or guessable, enumeration of affected answers may require minimal effort.
RemediationAI
Vendor-released patch: Apache Answer 2.0.2, which corrects the moderation-state access control check on the single-answer read path. Upgrade immediately following the vendor advisory at https://lists.apache.org/thread/rq3ygd0j9cchkbmh99dqf8624s7r8y49. If upgrade is not immediately possible, place the Apache Answer instance behind an authenticated reverse proxy to require login before any API access - note this will break unauthenticated read access for public visitors, which may be unacceptable for public-facing communities. Alternatively, network-level ACLs restricting the single-answer API route to authenticated sessions only can reduce exposure, though implementation depends on the deployment's web server configuration. Neither workaround addresses the root-cause flaw and should be treated as temporary only.
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Same weakness CWE-200 – Information Exposure
View allSame technique Information Disclosure
View allShare
External POC / Exploit Code
Leaving vuln.today
EUVD-2026-53401
GHSA-x73g-vq9w-776v