How severe is CVE-2011-0533?

No CVSS score has been assigned to CVE-2011-0533 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2011-0533?

CVE-2011-0533 affects the following packages: org.apache.archiva:archiva (Maven), org.apache.continuum:continuum (Maven), org.apache.continuum:continuum (Maven). Ecosystems affected: Maven.

How do I fix CVE-2011-0533?

Update org.apache.archiva:archiva to 1.3.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2011-0533 is resolved across your whole dependency graph.

How do I detect CVE-2011-0533 in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.archiva:archiva, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2011-0533 if there is no patch (or I can't update yet)?

Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Is CVE-2011-0533 actively exploited in the wild?

No public exploit code has been indexed for CVE-2011-0533 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2011-0533?

CVE-2011-0533 has an EPSS (Exploit Prediction Scoring System) score of 4.2%, placing it in the 91th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2011-0533?

CVE-2011-0533 is classified as Cross-site Scripting (XSS) (CWE-79). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2011-0533 published, and has it been updated?

CVE-2011-0533 was published on May 14, 2022 and was last updated on April 12, 2025. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CVE-2011-0533: archiva XSS

EPSS Exploitation Probability

via FIRST.org ↗

4.2%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs91th percentile — riskier than 91% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

3 pkgs affected

☕org.apache.archiva:archiva☕org.apache.continuum:continuum☕org.apache.continuum:continuum

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Cross-site scripting (XSS) vulnerability in Apache Continuum 1.1 through 1.2.3.1, 1.3.6, and 1.4.0 Beta; and Archiva 1.3.0 through 1.3.3 and 1.0 through 1.2.2 allows remote attackers to inject arbitrary web script or HTML via a crafted parameter, related to the autoIncludeParameters setting for the extremecomponents table.

Affected Packages

3 total 2 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.apache.archiva:archiva`	≥ 1.0&&< 1.3.4	1.3.4`org.apache.archiva:archiva:1.3.4`
☕Maven	`org.apache.continuum:continuum`	≥ 1.1&&< 1.3.7	1.3.7`org.apache.continuum:continuum:1.3.7`
☕Maven	`org.apache.continuum:continuum`	all versions	No fix

Affected Products

2 products · 23 configurations

Application

archivaapache

16 versions

1.01.0.11.0.21.0.31.11.1.11.1.21.1.31.1.41.21.2.11.2.2

Application

continuumapache

7 versions

1.11.21.2.21.2.31.2.3.11.3.61.4.0

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.archiva:archiva, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.apache.archiva:archiva to 1.3.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2011-0533 is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

Cross-site scripting (XSS) vulnerability in Apache Continuum 1.1 through 1.2.3.1, 1.3.6, and 1.4.0 Beta; and Archiva 1.3.0 through 1.3.3 and 1.0 through 1.2.2 allows remote attackers to inject arbitrary web script or HTML via a crafted parameter, related to the autoIncludeParameters setting for the extremecomponents table.

O3 Security · Impact-Aware SCA

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CVE-2011-0533 — archiva