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TI-2026-27137 Aliases CVE-2026-34905GHSA-85r2-pvg8-89r9

Apache Answer: Unlisted Questions Accessible via Direct API Access

Priority LOW 29CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-200.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00313 24th percentileScored 2026-11-07
Fix Fixed github.com/apache/incubator-answer (Go): 1.7.2-0.20260509071350-11c80384f13a

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache Answerup to 2.0.0—No fix listedCNA
—github.com/apache/incubator-answer (Go)before 1.7.2-0.20260509071350-11c80384f13a1.7.2-0.20260509071350-11c80384f13aPatch availableGHSA-85r2-pvg8-89r9
  • Apache Answer VendorApache Affected up to 2.0.0 Fixed in — No fix listed CNA
  • github.com/apache/incubator-answer (Go) Vendor— Affected before 1.7.2-0.20260509071350-11c80384f13a Fixed in 1.7.2-0.20260509071350-11c80384f13a Patch available GHSA-85r2-pvg8-89r9

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:apache:answer:*:*:*:*:*:*:*:*before 2.0.1VulnerableApache
  • cpe:2.3:a:apache:answer:*:*:*:*:*:*:*:* Versions before 2.0.1 Vulnerable ·Apache

Remediation

  • Fix · GHSA-85r2-pvg8-89r9 github.com/apache/incubator-answer (Go) Fixed in 1.7.2-0.20260509071350-11c80384f13a Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-34905
  2. 2026-10-03 Alias added: GHSA-85r2-pvg8-89r9

References

Advisory 2

Other 4

  • TI-2024-14967 Apache Answer: Pixel Flood Attack by uploading the large pixel file CVSS 3.1CRITICAL 9.1
  • TI-2026-42802 Apache Answer: Residual Administrative API Key Access After Role or Account Revocation CVSS 3.1CRITICAL 9.1
  • TI-2026-42790 Apache Answer: Unauthorized disclosure of deleted or pending answer content CVSS 3.1HIGH 7.5
  • TI-2026-36171 Apache Answer: Unauthenticated OAuth Email-Binding Account Takeover via Existing User Confirmation Flow CVSS 3.1HIGH 7.5
  • TI-2026-36100 Apache Answer: Denial of service via crafted Accept-Language header parsing CVSS 3.1HIGH 7.5
  • TI-2026-19940 Apache Answer: Revision API Improper Access Control leads to Information Disclosure CVSS 3.1HIGH 7.5
See all 23 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences