CVE-2026-34905Network attack vector

Authenticated information disclosure via missing visibility checks

Published Jun 9, 2026 · Updated Jun 9, 2026

Information disclosure in Apache Answer 2.0.0 and earlier allows remote authenticated users to read unlisted questions via direct API requests. Question, answer, and comment services returned objects by identifier without consistently checking whether a hidden parent question belonged to the requester or whether the requester was an administrator or moderator. Any authenticated account that learns or enumerates an object identifier can read the hidden question and its related answers, comments, and revision history, but no write or service-interruption impact is reported.

CVSS severity6.5
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Apache Answer 2.0.0 and earlier allows remote authenticated users to read unlisted questions via direct API requests. Question, answer, and comment services returned objects by identifier without consistently checking whether a hidden parent question belonged to the requester or whether the requester was an administrator or moderator. Any authenticated account that learns or enumerates an object identifier can read the hidden question and its related answers, comments, and revision history, but no write or service-interruption impact is reported.

The record

CVE
CVE-2026-34905
Published
Jun 9, 2026
Updated
Jun 9, 2026
Vendor
The Apache Software Foundation
Product
Apache Answer
Classifications
CWE-200, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache Answerversion=0 <=2.0.0

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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