CVE-2026-82546: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Apache Software Foundation Apache Roller
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Apache Roller 6.1.5 allows an unauthenticated remote attacker to store a crafted comment-author URL through the incoming Trackback endpoint when a published entry accepts comments and Trackbacks. The shipped Trackback, verification and moderation defaults allow the value to be approved and rendered as an active link; a visitor who clicks the link executes script in the weblog's origin. Users are recommended to upgrade to Apache Roller 6.1.6 or later, which removes incoming Trackback support and suppresses non-HTTP(S) comment-author links. Users unable to upgrade should disable Trackbacks and remove untrusted Trackback comments.
AI Analysis
Technical Summary
CVE-2026-82546 is a CWE-79 cross-site scripting vulnerability in Apache Roller 6.1.5. An unauthenticated remote attacker can exploit the Trackback endpoint to store a crafted comment-author URL. Due to default Trackback, verification, and moderation settings, this malicious URL can be approved and rendered as an active link, enabling script execution in the context of the weblog's origin when a visitor clicks the link. Apache Roller 6.1.6 removes incoming Trackback support and suppresses non-HTTP(S) comment-author links to mitigate this issue.
Potential Impact
Successful exploitation allows an unauthenticated attacker to inject and store malicious scripts that execute in the browsers of visitors who click the crafted comment-author links. This can lead to information disclosure and limited integrity impact within the affected weblog context. The CVSS 3.1 base score is 6.1 (medium severity), reflecting network attack vector, low attack complexity, no privileges required, user interaction required, and partial confidentiality and integrity impact.
Mitigation Recommendations
A fix is available in Apache Roller 6.1.6 and later, which removes incoming Trackback support and suppresses non-HTTP(S) comment-author links. Users should upgrade to version 6.1.6 or later. For those unable to upgrade immediately, it is recommended to disable Trackbacks and remove any untrusted Trackback comments to mitigate the risk.
CVE-2026-82546: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Apache Software Foundation Apache Roller
Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Apache Roller 6.1.5 allows an unauthenticated remote attacker to store a crafted comment-author URL through the incoming Trackback endpoint when a published entry accepts comments and Trackbacks. The shipped Trackback, verification and moderation defaults allow the value to be approved and rendered as an active link; a visitor who clicks the link executes script in the weblog's origin. Users are recommended to upgrade to Apache Roller 6.1.6 or later, which removes incoming Trackback support and suppresses non-HTTP(S) comment-author links. Users unable to upgrade should disable Trackbacks and remove untrusted Trackback comments.
CVSS v3.1
Score 6.1medium
Affected software
Apache Software Foundation
Apache Roller
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-82546 is a CWE-79 cross-site scripting vulnerability in Apache Roller 6.1.5. An unauthenticated remote attacker can exploit the Trackback endpoint to store a crafted comment-author URL. Due to default Trackback, verification, and moderation settings, this malicious URL can be approved and rendered as an active link, enabling script execution in the context of the weblog's origin when a visitor clicks the link. Apache Roller 6.1.6 removes incoming Trackback support and suppresses non-HTTP(S) comment-author links to mitigate this issue.
Potential Impact
Successful exploitation allows an unauthenticated attacker to inject and store malicious scripts that execute in the browsers of visitors who click the crafted comment-author links. This can lead to information disclosure and limited integrity impact within the affected weblog context. The CVSS 3.1 base score is 6.1 (medium severity), reflecting network attack vector, low attack complexity, no privileges required, user interaction required, and partial confidentiality and integrity impact.
Mitigation Recommendations
A fix is available in Apache Roller 6.1.6 and later, which removes incoming Trackback support and suppresses non-HTTP(S) comment-author links. Users should upgrade to version 6.1.6 or later. For those unable to upgrade immediately, it is recommended to disable Trackbacks and remove any untrusted Trackback comments to mitigate the risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-08-29T18:17:24.222Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aba1bc8f7a7c541065ca3e1
Added to database: 09/28/2026, 07:48:24 UTC
Last enriched: 09/28/2026, 08:03:26 UTC
Last updated: 09/29/2026, 02:52:02 UTC
Views: 19
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