CVE-2009-3266

Opera before 10.01 does not properly restrict HTML in a (1) RSS or (2) Atom feed, which allows remote attackers to conduct cross-site scripting (XSS) attacks, and conduct cross-zone scripting attacks involving the Feed Subscription Page to read feeds or create feed subscriptions, via a crafted feed, related to the rendering of the application/rss+xml content type as "scripted content."

• CWE-79

• http://archives.neohapsis.com/archives/bugtraq/2009-10/0289.html
• http://secunia.com/advisories/37182Vendor Advisory
• http://securethoughts.com/2009/09/exploiting-chrome-and-operas-inbuilt-atomrss-reader-with-script-execution-and-more/Exploit
• http://securethoughts.com/2009/10/hijacking-operas-native-page-using-malicious-rss-payloads/
• http://www.opera.com/docs/changelogs/mac/1001/Patch
• http://www.opera.com/docs/changelogs/unix/1001/Patch
• http://www.opera.com/docs/changelogs/windows/1001/Patch
• http://www.opera.com/support/kb/view/939/Vendor Advisory
• http://www.osvdb.org/59358
• http://www.securityfocus.com/archive/1/506517/100/0/threaded
• http://www.securityfocus.com/bid/36418
• http://www.securityfocus.com/bid/36850
• http://www.vupen.com/english/advisories/2009/3073Vendor Advisory
• https://exchange.xforce.ibmcloud.com/vulnerabilities/54021
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6314
• http://archives.neohapsis.com/archives/bugtraq/2009-10/0289.html
• http://secunia.com/advisories/37182Vendor Advisory
• http://securethoughts.com/2009/09/exploiting-chrome-and-operas-inbuilt-atomrss-reader-with-script-execution-and-more/Exploit
• http://securethoughts.com/2009/10/hijacking-operas-native-page-using-malicious-rss-payloads/
• http://www.opera.com/docs/changelogs/mac/1001/Patch
• http://www.opera.com/docs/changelogs/unix/1001/Patch
• http://www.opera.com/docs/changelogs/windows/1001/Patch
• http://www.opera.com/support/kb/view/939/Vendor Advisory
• http://www.osvdb.org/59358
• http://www.securityfocus.com/archive/1/506517/100/0/threaded
• http://www.securityfocus.com/bid/36418
• http://www.securityfocus.com/bid/36850
• http://www.vupen.com/english/advisories/2009/3073Vendor Advisory
• https://exchange.xforce.ibmcloud.com/vulnerabilities/54021
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6314

Published

Sep 18, 2009

Last Modified

Jun 16, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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