CVE-2026-91204— Apache Roller: Stored javascript: URI in HTML comments
Quick assessment
Affected
Apache Software Foundation Apache Roller
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
在 Apache Roller 6.1.5 中存在一种称为“网页生成过程中对输入中和不当”（即跨站脚本攻击，Cross-site Scripting）的安全漏洞。该漏洞允许匿名的远程攻击者存储包含 javascript: URI 链接的评论，这些评论可以绕过 HTML 注释格式的过滤，并在点击的访客浏览器中执行恶意脚本。此漏洞仅影响启用了评论中 HTML 功能（users.comments.htmlenabled=true）并使用了 HTMLSubset 评论格式化器的站点；如果启用了评论审核功能，则会延迟评论的发
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1189 · Drive-by Compromise
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I. Basic Information for CVE-2026-91204
Vulnerability Information
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Vulnerability Title
Apache Roller: Stored javascript: URI in HTML comments
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Apache Software Foundation | Apache Roller | 6.1.5 | - |
|
II. Public POCs for CVE-2026-91204
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-91204 (2)
-
https://lists.apache.org/thread/4qzp8m0438056l5t6m6719ob79gx72lz vendor-advisory
Same Patch Batch · Apache Software Foundation · 2026-09-28 · 20 CVEs total
| CVE-2026-82377 | 9.9 CRITICAL | Apache Roller: Missing weblog authorization in XML-RPC Blogger/MetaWeblog handlers |
| CVE-2026-82384 | 9.8 CRITICAL | Apache Roller: Unauthenticated deserialization in the XML-RPC endpoint |
| CVE-2026-82378 | 9.0 CRITICAL | Apache Roller: OAuth authorization endpoint trusts request-supplied identity |
| CVE-2026-82383 | 8.2 HIGH | Apache Roller: Anonymous setup action allows frontpage configuration tampering |
| CVE-2026-82380 | 8.1 HIGH | Apache Roller: CSRF protection bypass via self-generated salt validation |
| CVE-2026-82348 | 7.7 HIGH | Apache Roller: Cross-weblog resource tampering via unscoped authoring lookups |
| CVE-2026-82379 | 7.7 HIGH | Apache Roller: WSSE digest authentication headers can be replayed |
| CVE-2026-82386 | 7.7 HIGH | Apache Roller: XML external entity processing in OPML bookmark import |
| CVE-2026-82376 | 7.7 HIGH | Apache Roller: XML external entity processing in trackback response parser |
| CVE-2026-82375 | 7.4 HIGH | Apache Roller: Server-side request forgery via entry trackback and enclosure URLs |
| CVE-2026-82385 | 6.5 MEDIUM | Apache Roller: Weblog template include escapes the Velocity sandbox and reads classpath fi |
| CVE-2026-91206 | 6.1 MEDIUM | Apache Roller: Reflected XSS in the optional LDAP comment authenticator |
| CVE-2026-82546 | 6.1 MEDIUM | Apache Roller: Stored cross-site scripting through incoming Trackback links |
| CVE-2026-82382 | 6.1 MEDIUM | Apache Roller: Reflected cross-site scripting in the frontpage directory parameter |
| CVE-2026-86507 | 6.1 MEDIUM | Apache Roller: Stored XSS in comment moderation via comment author URL |
| CVE-2026-82381 | 5.4 MEDIUM | Apache Roller: Stored cross-site scripting in the authoring UI |
| CVE-2026-82387 | 5.4 MEDIUM | Apache Roller: Stored cross-site scripting via uploaded media content type |
| CVE-2026-90979 | Apache Karaf: LDAP filter injection in JAAS LDAP login modules | |
| CVE-2026-91006 | Apache Karaf: OS Command Injection in Child-Instance Launch (instance:* / InstancesMBean) |
IV. Related Vulnerabilities
Same product: Apache Roller
-
CVE-2026-86507
Apache Roller: Stored XSS in comment moderation via comment -
CVE-2026-82379
Apache Roller: WSSE digest authentication headers can be rep -
CVE-2026-82380
Apache Roller: CSRF protection bypass via self-generated sal -
CVE-2026-82381
Apache Roller: Stored cross-site scripting in the authoring -
CVE-2026-82382
Apache Roller: Reflected cross-site scripting in the frontpa
Same vendor: Apache Software Foundation
-
CVE-2026-91006
Apache Karaf: OS Command Injection in Child-Instance Launch -
CVE-2026-90979
Apache Karaf: LDAP filter injection in JAAS LDAP login modul -
CVE-2026-86507
Apache Roller: Stored XSS in comment moderation via comment -
CVE-2026-82379
Apache Roller: WSSE digest authentication headers can be rep -
CVE-2026-82380
Apache Roller: CSRF protection bypass via self-generated sal
Same weakness: CWE-79
-
CVE-2026-82326
HTML Injection in Enocta Educational's Enocta Platform -
CVE-2026-87752
HTML Injection in Rolantis Information Technologies' Agentis -
CVE-2026-7171
Stored Cross-Site Scripting (XSS) in TPVEnlanube -
CVE-2026-7172
Stored Cross-Site Scripting (XSS) in TPVEnlanube -
CVE-2026-7170
Stored Cross-Site Scripting (XSS) in TPVEnlanube
V. Comments for CVE-2026-91204
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