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PatchSiren cyber security CVE debrief

CVE-2026-34033 Apache CVE debrief

CVE-2026-34033 is a MEDIUM severity vulnerability in Apache Answer through 2.0.0, allowing authenticated users to inject arbitrary HTML into emails sent to other users due to improper neutralization of script-related HTML tags. Users are recommended to upgrade to version 2.0.1 to fix the issue.

Vendor
Apache
Product
Answer
CVSS
MEDIUM 5.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-06-11
Advisory published
2026-06-09
Advisory updated
2026-06-11

Who should care

Users of Apache Answer through version 2.0.0 should be aware of this vulnerability and take action to upgrade to version 2.0.1.

Technical summary

The vulnerability is caused by user-supplied content being included in notification emails without proper escaping. This allows authenticated users to inject arbitrary HTML into emails sent to other users.

Defensive priority

MEDIUM

Recommended defensive actions

  • Upgrade to version 2.0.1 of Apache Answer.

Evidence notes

The vulnerability affects Apache Answer through version 2.0.0. The CVSS score is 5.4, indicating a MEDIUM severity vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-34033 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-34033

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-34033 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-34033

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.