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MEDIUM severity

CVE-2026-34033 — incubator-answer

MEDIUMFix: apache/answer@d1a4092

CVE-2026-34033 is a medium-severity (CVSS 5.4) CWE-80 vulnerability in github.com/apache/incubator-answer. A fix is available for github.com/apache/incubator-answer — see the affected versions and patch details below.

Apache Answer: HTML Content Injection in Email

Also known asGHSA-6qwm-5fm9-cvjxGO-2026-6151
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Oct 28, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-34033.

EPSS Exploitation Probability

via FIRST.org ↗
0.3%probability of exploitation in next 30 days
Lower Risk-0.19%
Lower risk than most CVEs27th percentile — riskier than 27% of all scored CVEsHighest risk
0.00%0.34%0.68%1.02%0.4%0.4%0.3%0.5%0.3%Jul 26Sep 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2026-34033 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 398,142 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected
🐹github.com/apache/incubator-answer

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.

Description

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.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐹Gogithub.com/apache/incubator-answerall versions1.7.2-0.20260509080709-d1a4092c61ccgo get github.com/apache/incubator-answer@v1.7.2-0.20260509080709-d1a4092c61cc

Affected Products

1 product · 1 configurations
Application
answerapache
< 2.0.1
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/apache/incubator-answer, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update github.com/apache/incubator-answer to 1.7.2-0.20260509080709-d1a4092c61cc or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-34033 is resolved across your whole dependency graph.

  3. Workarounds

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

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.
O3 Security · Impact-Aware SCA

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CVE-2026-34033: incubator-answer XSS — Fix Available