dbcve.org
AnswerApplication · Apache

CVE-2026-34033

MEDIUM · 5.4 CVSS v3.1 Published 2026-06-09
Fix available
A fix is available. Upgrade to 2.0.1 or later.
See remediation →
58/100
Remediation priority · Elevated
Remotely reachable

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.0. User-supplied content was included in notification emails without proper escaping, allowing authenticated users to inject arbitrary HTML into emails sent to other users. Users are recommended to upgrade to version 2.0.1, which fixes the issue.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

This is a stored XSS vulnerability in Apache Answer's notification email system. User-supplied content (e.g., from posts or comments) is included in notification emails without proper HTML escaping, allowing authenticated attackers to inject arbitrary HTML/script tags that execute when other users view these emails.

MitigationUpgrade Apache Answer to version 2.0.1 or later, which contains the fix for proper HTML escaping of user content in email templates.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
AnswerApplication
Affected:< 2.0.1

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify Apache Answer installation and version
    Check the installed version of Apache Answer by examining the application binary, Docker image tag, or the version displayed in the admin dashboard under 'System' > 'About'. Compare this version number to the affected range (versions prior to 2.0.1).
    Affected if The installed version is Apache Answer and is lower than 2.0.1
  2. Verify email notifications are enabled
    Access the Apache Answer admin panel and navigate to 'Settings' > 'Email' or 'Notification' settings. Check whether email notifications are turned on for events such as new posts, comments, or user registrations.
    Affected if Email notifications are enabled and the Apache Answer version is below 2.0.1
  3. Confirm user-generated content can be submitted
    Log in as a regular authenticated user and verify the ability to create posts, comments, or edit profile information. Attempt to include HTML or script tags in these content fields to see if the input is accepted.
    Affected if User accounts can submit content and the installed version is below 2.0.1
  4. Inspect email template handling
    If you have access to the Apache Answer source code or configuration files, examine the email template files (typically in a templates or emails directory). Look for whether user-supplied content is passed directly to email templates without HTML escaping functions.
    Affected if Email templates contain user content without escaping and the version is below 2.0.1

You are affected if Apache Answer version is below 2.0.1 and email notifications are enabled, allowing authenticated users to submit content that gets included in notification emails without sanitization.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 2.0.1 or later
Fixed in 2.0.1
Interim mitigation

Upgrade Apache Answer to version 2.0.1 or later, which contains the fix for proper HTML escaping of user content in email templates.

Recommended fix High confidence

2.0.1

  1. 1. Upgrade Apache Answer from your current version to version 2.0.1 or later.

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Answer Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing3.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,390
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,224.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-34033 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data