CVE-2009-3266
Opera before 10.01 does not properly restrict HTML in a (1) RSS or (2) Atom feed, which allows...
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."
Exploit likelihood
What each source reports
NVD Score used
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."
- Record
CVE-2009-3266- CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
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."
- Record
CVE-2009-3266- Updated
- 2026-11-02
EUVDEUVD-2009-3249 No score
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."
- Record
EUVD-2009-3249- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-9f37-2v5p-xv7g No score
Opera before 10.01 does not properly restrict HTML in a (1) RSS or (2) Atom feed, which allows...
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."
- Record
GHSA-9f37-2v5p-xv7g- Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2009-3266 is a medium vulnerability (CVSS 4.3) in Opera Browser, published September 18, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.68%, the 85th percentile. No source names a fixed version.
References
opera.com/support/kb/view/939
vupen.com/english/advisories/2009/3073
securityfocus.com/archive/1/506517/100/0/threaded
archives.neohapsis.com/archives/bugtraq/2009-10/0289.html
securethoughts.com/2009/10/hijacking-operas-native-page-using-malicious-rss-payloads
osvdb.org/59358
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secunia.com/advisories/37182
exchange.xforce.ibmcloud.com/vulnerabilities/54021
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6314
nvd.nist.gov/vuln/detail/CVE-2009-3266
github.com/advisories/GHSA-9f37-2v5p-xv7g