CVE-2026-64944Network attack vectorHinoki check available

Stored XSS via unsanitized imported question HTML

Published Oct 19, 2026 · Updated Oct 19, 2026

Stored XSS in Apache Answer 2.0.2 and earlier allows attackers to execute scripts in viewers' browsers via imported questions. The importer persists question bodies as raw HTML instead of applying the normal Markdown-to-HTML sanitization path. Exploitation requires attacker-controlled HTML to enter an imported data source and a viewer to open the resulting content, including privileged viewers; execution occurs in the browser rather than on the server.

CVSS severityUnavailable
Unscored
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Stored XSS in Apache Answer 2.0.2 and earlier allows attackers to execute scripts in viewers' browsers via imported questions. The importer persists question bodies as raw HTML instead of applying the normal Markdown-to-HTML sanitization path. Exploitation requires attacker-controlled HTML to enter an imported data source and a viewer to open the resulting content, including privileged viewers; execution occurs in the browser rather than on the server.

The record

CVE
CVE-2026-64944
Published
Oct 19, 2026
Updated
Oct 19, 2026
Vendor
The Apache Software Foundation
Product
Apache Answer
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 19, 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 <=2.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

The Apache Software Foundation · Apache Answerversion=0 <=2.0.2

Published CVSS scores

No CVSS assessment is available in this record.

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

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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