CVE-2009-3263 Cross-site scripting in n/a

What is CVE-2009-3263?

CVE-2009-3263 is a medium-severity cross-site scripting vulnerability in Google Chrome, published on 18 Sep 2009. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Cross-site scripting (XSS) vulnerability in Google Chrome 2.x and 3.x before 3.0.195.21 allows remote attackers to inject arbitrary web script or HTML via a (1) RSS or (2) Atom feed, related to the rendering of the application/rss+xml content type as XML "active content."

Weakness: CWE-79

Which versions are affected by CVE-2009-3263?

It affects 1 product.

Products include Google Chrome.

How do I fix CVE-2009-3263?

No fix has been published for CVE-2009-3263 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2009-3263 being exploited?

There is no known exploitation of CVE-2009-3263 in the wild and no public exploit code.

Other vulnerabilities in Google Chrome

• CVE-2022-4135 Google Chromium GPU Heap Buffer Overflow Exploited Critical 9.6
• CVE-2020-16017 Google Chrome Use-After-Free Exploited Critical 9.6
• CVE-2020-16010 Google Chrome for Android UI Heap Buffer Overflow Exploited Critical 9.6
• CVE-2026-87491 Google Chromium V8 Out of Bounds Write Exploited High 8.8
• CVE-2026-85046 Google Chromium V8 Type Confusion Exploited High 8.8

All Google Chrome vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-qm5r-9c54-3rgj.