CVE-2026-34031Network attack vector

External content embedding via unchecked avatar URL

Published Jun 9, 2026 · Updated Jun 9, 2026

Unrestricted profile-image upload in Apache Answer 2.0.0 and earlier allows remote attackers to embed arbitrary external content. The UpdateInfo path accepted a custom avatar URL without verifying that it matched an avatar file record owned by the affected user. Rendered profiles can make browsers request attacker-controlled resources, disclosing visitor network metadata and enabling third-party tracking.

CVSS severity6.5
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted profile-image upload in Apache Answer 2.0.0 and earlier allows remote attackers to embed arbitrary external content. The UpdateInfo path accepted a custom avatar URL without verifying that it matched an avatar file record owned by the affected user. Rendered profiles can make browsers request attacker-controlled resources, disclosing visitor network metadata and enabling third-party tracking.

The record

CVE
CVE-2026-34031
Published
Jun 9, 2026
Updated
Jun 9, 2026
Vendor
The Apache Software Foundation
Product
Apache Answer
Classifications
CWE-434
Attack vector
network
Privileges
unauthenticated

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 privilegesunauthenticated

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:N/UI:N/S:U/C:L/I:L/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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