Vulnerability Monitor

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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."

Security Impact Summary

CVE-2009-3266 is a security vulnerability that . Impacting 1 product from opera organizations running these solutions should prioritize assessment and patching.

Historical Context

Originally identified in 2009, this vulnerability predates many modern security frameworks and practices. The vulnerability landscape of that era was characterized by different threat models and less mature defense mechanisms compared to contemporary standards.

Published

2009-09-18T22:30:00.640

Last Modified

2025-04-09T00:30:58.490

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 4.3 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:P/A:N

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
CWE-79

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	opera	opera_browser	5.0	Yes
Application	opera	opera_browser	5.0	Yes
Application	opera	opera_browser	5.0	Yes
Application	opera	opera_browser	5.0	Yes
Application	opera	opera_browser	5.0	Yes
Application	opera	opera_browser	5.0	Yes
Application	opera	opera_browser	5.0	Yes
Application	opera	opera_browser	5.0	Yes
Application	opera	opera_browser	5.02	Yes
Application	opera	opera_browser	5.10	Yes
Application	opera	opera_browser	5.11	Yes
Application	opera	opera_browser	5.12	Yes
Application	opera	opera_browser	6.0	Yes
Application	opera	opera_browser	6.0	Yes
Application	opera	opera_browser	6.0	Yes
Application	opera	opera_browser	6.0	Yes
Application	opera	opera_browser	6.0	Yes
Application	opera	opera_browser	6.0	Yes
Application	opera	opera_browser	6.1	Yes
Application	opera	opera_browser	6.01	Yes
Application	opera	opera_browser	6.1	Yes
Application	opera	opera_browser	6.02	Yes
Application	opera	opera_browser	6.03	Yes
Application	opera	opera_browser	6.04	Yes
Application	opera	opera_browser	6.05	Yes
Application	opera	opera_browser	6.06	Yes
Application	opera	opera_browser	6.11	Yes
Application	opera	opera_browser	6.12	Yes
Application	opera	opera_browser	7.0	Yes
Application	opera	opera_browser	7.0	Yes
Application	opera	opera_browser	7.0	Yes
Application	opera	opera_browser	7.0	Yes
Application	opera	opera_browser	7.01	Yes
Application	opera	opera_browser	7.02	Yes
Application	opera	opera_browser	7.03	Yes
Application	opera	opera_browser	7.10	Yes
Application	opera	opera_browser	7.10	Yes
Application	opera	opera_browser	7.11	Yes
Application	opera	opera_browser	7.11	Yes
Application	opera	opera_browser	7.20	Yes
Application	opera	opera_browser	7.20	Yes
Application	opera	opera_browser	7.21	Yes
Application	opera	opera_browser	7.22	Yes
Application	opera	opera_browser	7.23	Yes
Application	opera	opera_browser	7.50	Yes
Application	opera	opera_browser	7.50	Yes
Application	opera	opera_browser	7.51	Yes
Application	opera	opera_browser	7.52	Yes
Application	opera	opera_browser	7.53	Yes
Application	opera	opera_browser	7.54	Yes
Application	opera	opera_browser	7.54	Yes
Application	opera	opera_browser	7.54	Yes
Application	opera	opera_browser	7.60	Yes
Application	opera	opera_browser	8.0	Yes
Application	opera	opera_browser	8.0	Yes
Application	opera	opera_browser	8.0	Yes
Application	opera	opera_browser	8.0	Yes
Application	opera	opera_browser	8.01	Yes
Application	opera	opera_browser	8.02	Yes
Application	opera	opera_browser	8.50	Yes
Application	opera	opera_browser	8.51	Yes
Application	opera	opera_browser	8.52	Yes
Application	opera	opera_browser	8.53	Yes
Application	opera	opera_browser	8.54	Yes
Application	opera	opera_browser	9.0	Yes
Application	opera	opera_browser	9.0	Yes
Application	opera	opera_browser	9.0	Yes
Application	opera	opera_browser	9.01	Yes
Application	opera	opera_browser	9.02	Yes
Application	opera	opera_browser	9.10	Yes
Application	opera	opera_browser	9.12	Yes
Application	opera	opera_browser	9.20	Yes
Application	opera	opera_browser	9.20	Yes
Application	opera	opera_browser	9.21	Yes
Application	opera	opera_browser	9.22	Yes
Application	opera	opera_browser	9.23	Yes
Application	opera	opera_browser	9.24	Yes
Application	opera	opera_browser	9.25	Yes
Application	opera	opera_browser	9.26	Yes
Application	opera	opera_browser	9.27	Yes
Application	opera	opera_browser	9.50	Yes
Application	opera	opera_browser	9.50	Yes
Application	opera	opera_browser	9.50	Yes
Application	opera	opera_browser	9.51	Yes
Application	opera	opera_browser	9.52	Yes
Application	opera	opera_browser	9.60	Yes
Application	opera	opera_browser	9.60	Yes
Application	opera	opera_browser	9.61	Yes
Application	opera	opera_browser	9.62	Yes
Application	opera	opera_browser	9.63	Yes
Application	opera	opera_browser	9.64	Yes
Application	opera	opera_browser	10.00	Yes
Application	opera	opera_browser	10.00	Yes
Application	opera	opera_browser	10.00	Yes
Application	opera	opera_browser	10.00	Yes
Application	opera	opera_browser	10.01	Yes
Application	opera	opera_browser	10.10	Yes
Application	opera	opera_browser	10.10	Yes
Application	opera	opera_browser	10.50	Yes
Application	opera	opera_browser	10.50	Yes
Application	opera	opera_browser	10.50	Yes
Application	opera	opera_browser	10.51	Yes
Application	opera	opera_browser	10.52	Yes
Application	opera	opera_browser	10.53	Yes
Application	opera	opera_browser	10.53	Yes

References

http://archives.neohapsis.com/archives/bugtraq/2009-10/0289.html ([email protected])
http://secunia.com/advisories/37182 Vendor Advisory ([email protected])
http://securethoughts.com/2009/09/exploiting-chrome-and-operas-inbuilt-atomrss-reader-with-script-execution-and-more/ Exploit ([email protected])
http://securethoughts.com/2009/10/hijacking-operas-native-page-using-malicious-rss-payloads/ ([email protected])
http://www.opera.com/docs/changelogs/mac/1001/ Patch ([email protected])
http://www.opera.com/docs/changelogs/unix/1001/ Patch ([email protected])
http://www.opera.com/docs/changelogs/windows/1001/ Patch ([email protected])
http://www.opera.com/support/kb/view/939/ Vendor Advisory ([email protected])
http://www.osvdb.org/59358 ([email protected])
http://www.securityfocus.com/archive/1/506517/100/0/threaded ([email protected])
http://www.securityfocus.com/bid/36418 ([email protected])
http://www.securityfocus.com/bid/36850 ([email protected])
http://www.vupen.com/english/advisories/2009/3073 Vendor Advisory ([email protected])
https://exchange.xforce.ibmcloud.com/vulnerabilities/54021 ([email protected])
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6314 ([email protected])
http://archives.neohapsis.com/archives/bugtraq/2009-10/0289.html (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/37182 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://securethoughts.com/2009/09/exploiting-chrome-and-operas-inbuilt-atomrss-reader-with-script-execution-and-more/ Exploit (af854a3a-2127-422b-91ae-364da2661108)
http://securethoughts.com/2009/10/hijacking-operas-native-page-using-malicious-rss-payloads/ (af854a3a-2127-422b-91ae-364da2661108)
http://www.opera.com/docs/changelogs/mac/1001/ Patch (af854a3a-2127-422b-91ae-364da2661108)
http://www.opera.com/docs/changelogs/unix/1001/ Patch (af854a3a-2127-422b-91ae-364da2661108)
http://www.opera.com/docs/changelogs/windows/1001/ Patch (af854a3a-2127-422b-91ae-364da2661108)
http://www.opera.com/support/kb/view/939/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.osvdb.org/59358 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/archive/1/506517/100/0/threaded (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/36418 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/36850 (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2009/3073 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://exchange.xforce.ibmcloud.com/vulnerabilities/54021 (af854a3a-2127-422b-91ae-364da2661108)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6314 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For opera's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.