CVE-2012-0820 Cross-site scripting (XSS) vulnerability in Joomla!
Medium 4.3
Published
Updated
Check this codebase for CVE-2012-0820 and fix it if it is affected.
What it is: CVE-2012-0820 is a medium-severity vulnerability in Joomla Joomla\!, published on 6 Sep 2012.
Exploitation: There is no known exploitation of CVE-2012-0820 in the wild and no public exploit code.
Affected product: Joomla Joomla\!. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2012-0820/ (Markdown: https://insights.sbomify.com/CVE-2012-0820/index.md)
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2012-0820?
CVE-2012-0820 is a medium-severity vulnerability in Joomla Joomla\!, published on 6 Sep 2012.
Official description
Cross-site scripting (XSS) vulnerability in Joomla! 1.6.x and 1.7.x before 1.7.4 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors, a different vulnerability than CVE-2012-0822.
Weakness: CWE-79
Which versions are affected by CVE-2012-0820?
It affects 1 product.
Products include Joomla Joomla\!.
How do I fix CVE-2012-0820?
No fix has been published for CVE-2012-0820 yet. Limit exposure of the affected software until one is available.
Is CVE-2012-0820 being exploited?
There is no known exploitation of CVE-2012-0820 in the wild and no public exploit code.
Other vulnerabilities in Joomla Joomla\!
- CVE-2016-10033 PHPMailer Command Injection
- CVE-2023-23752 Joomla! Improper Access Control
- CVE-2026-48902 Joomla! Core - [20260518] - Transport encryption downgrade for password and username reset links
- CVE-2025-25226 [20250401] - Joomla Framework - SQL injection vulnerability in quoteNameStr method of Database package
- CVE-2022-23795 [20220303] - Core - User row are not bound to a authentication mechanism
Sources
Also known as CVE-2011-4934, GHSA-f555-4w97-726w.