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TI-2026-26357 Aliases CVE-2026-34031GHSA-x4f6-mqg6-28xx

Apache Answer: The custom avatar was not properly validated

Priority LOW 35CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-434.

Summary

Unrestricted Upload of File with Dangerous Type vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.0. The server did not sufficiently validate user-supplied image URLs, allowing arbitrary external content to be embedded as profile images, which could expose users to unintended external requests and tracking by third-party servers. 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 0.00362 30th percentileScored 2026-11-07
Fix Fixed github.com/apache/incubator-answer (Go): 1.7.2-0.20260511040518-11091244f64e

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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 1.7.2-0.20260511040518-11091244f64e1.7.2-0.20260511040518-11091244f64ePatch availableGHSA-x4f6-mqg6-28xx
  • Apache Answer VendorApache Affected up to 2.0.0 Fixed in — No fix listed CNA
  • github.com/apache/incubator-answer (Go) Vendor— Affected before 1.7.2-0.20260511040518-11091244f64e Fixed in 1.7.2-0.20260511040518-11091244f64e Patch available GHSA-x4f6-mqg6-28xx

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-x4f6-mqg6-28xx github.com/apache/incubator-answer (Go) Fixed in 1.7.2-0.20260511040518-11091244f64e Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-34031
  2. 2026-10-03 Alias added: GHSA-x4f6-mqg6-28xx

References

Advisory 3

Other 3

  • 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