Advisory severityMedium6.1Apache Software Foundation

Medium [CVE-2026-91204] Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Apache Roller 6.1.5 allows an anonymous remote attacker to store a comment containing a javascript: URI link that survives HTML comment formatting and can execute script in the browser of a visitor who clicks it

This medium-severity Apache Software Foundation advisory covers CVE-2026-91204 affecting Apache Roller.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-91204 Source published Sep 28, 2026Source updated Sep 30, 2026

VulniPulse record published Sep 28, 2026Record updated Sep 30, 2026

CVE-2026-91204

Affected products & platforms

Apache Software FoundationUnclassified

Open source advisory

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Summary

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Apache Roller 6.1.5 allows an anonymous remote attacker to store a comment containing a javascript: URI link that survives HTML comment formatting and can execute script in the browser of a visitor who clicks it.

This affects only sites that enable HTML in comments (users.comments.htmlenabled=true) together with the HTMLSubset comment formatter; comment moderation, where enabled, delays publication. Users are recommended to upgrade to Apache Roller 6.1.6 or later, which restricts restored links to http, https and mailto URIs.

Affected versions

Apache Roller 6.1.5

Official advisory · high-confidence parse· fetched 8 days ago·verify at source

Fixed versions

6.1.6

Official advisory · high-confidence parse· fetched 8 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation

This affects only sites that enable HTML in comments (users.comments.htmlenabled=true) together with the HTMLSubset comment formatter; comment moderation, where enabled, delays publication.
Users are recommended to upgrade to Apache Roller 6.1.6 or later, which restricts restored links to http, https and mailto URIs.

Official advisory · high-confidence parse· fetched 8 days ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Official vendor advisoryofficial
Official advisory page fetched and parsed; accepted detail fields are attributed to this page.
Apache Software Foundation
CVE.org CNA recordCVE.org
Independent CNA record used for near-real-time discovery and missed-CVE reconciliation. Discovered from the machine-readable feed https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/delta.json; this link opens the CVE.org record for CVE-2026-91204 instead of the raw feed document.
CVE Program

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2026-91204NVD CVE.org MITRE

Official resources

ASF Security — reporting & CVE process
Official documentation
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Apache project downloads (fixed releases)
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