# CVE-2026-64944: Apache Answer: Stored XSS via unsanitized HTML in imported question content

Status: published. Published: 2026-10-19. Updated: 2026-11-03.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Apache Answer.



This issue affects Apache Answer: through 2.0.2.

The importer stores imported question bodies as raw HTML without passing them through the normal Markdown-to-HTML sanitization path, so attacker-controlled HTML embedded in an imported data source is persisted and rendered to all viewers (including privileged users) as stored XSS.


Users are recommended to upgrade to version 2.0.3, which fixes the issue.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Apache Software Foundation / Apache Answer (apache.org/answer): ≥ 0; ≤ 2.0.2 (affected, semver). Source: CNA: apache

## Severity and prioritization

- CVSS 3.1: 5.4 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N; source: ADP: CISA-ADP

- CVSS 3.1: 5.4 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N; source: NVD: 134c704f-9b21-4f2e-91b3-4a467353bcc0

- CISA KEV: No listing in collected sources

- EPSS: 0.18% as of 2026-11-03; percentile 7.96%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-79

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://lists.apache.org/thread/2cjdm4pdrrvj0t6cgcfyo3hot9vq72kb (CNA: apache; vendor-advisory)

- http://www.openwall.com/lists/oss-security/2026/10/16/23 (ADP: CVE)

- https://lists.apache.org/thread/2cjdm4pdrrvj0t6cgcfyo3hot9vq72kb (security@apache.org)

- http://www.openwall.com/lists/oss-security/2026/10/16/23 (af854a3a-2127-422b-91ae-364da2661108)

## Provenance

- CNA: apache: https://www.cve.org/CVERecord?id=CVE-2026-64944; retrieved 2026-11-03; source updated 2026-11-03

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-64944; retrieved 2026-11-04; source updated 2026-11-03

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-64944; retrieved 2026-11-03; source updated Not reported

Revision: 544c31abe9329130a7655289a9487bf4dbdb94d796657bf237153a46e8af3fc3

Canonical: https://y2.dev/cve/CVE-2026-64944

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