How severe is CVE-2012-2966?

No CVSS score has been assigned to CVE-2012-2966 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2012-2966?

CVE-2012-2966 affects the following packages: com.caucho:resin (Maven). Ecosystems affected: Maven.

How do I fix CVE-2012-2966?

Update com.caucho:resin to 4.0.29 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2012-2966 is resolved across your whole dependency graph.

How do I detect CVE-2012-2966 in my Maven dependencies?

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

How do I mitigate CVE-2012-2966 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is CVE-2012-2966 actively exploited in the wild?

No public exploit code has been indexed for CVE-2012-2966 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-2012-2966?

CVE-2012-2966 has an EPSS (Exploit Prediction Scoring System) score of 1.6%, placing it in the 76th 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.

When was CVE-2012-2966 published, and has it been updated?

CVE-2012-2966 was published on May 17, 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.

☕ Maven

Not in CISA KEV

CVE-2012-2966 — resin

CVE-2012-2966 is a security vulnerability in com.caucho:resin. A fix is available for com.caucho:resin — see the affected versions and patch details below.

Caucho Quercus, as distributed in Resin, overwrites entries in SERVER superglobal array on basis of POST parameters

Published

May 17, 2022

Updated

Apr 12, 2025

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Oct 30, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

1.6%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs76th percentile — riskier than 76% of all scored CVEsHighest risk

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

Real-World Exposure

1 pkg affected

☕com.caucho:resin

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

Caucho Quercus, as distributed in Resin before 4.0.29, overwrites entries in the SERVER superglobal array on the basis of POST parameters, which has unspecified impact and remote attack vectors.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`com.caucho:resin`	all versions	4.0.29`com.caucho:resin:4.0.29`

Affected Products

1 product · 88 configurations

Application

resincaucho

≤ 4.0.28

87 versions

2.0.02.0.12.0.22.0.32.0.42.0.52.1.02.1.12.1.22.1.32.1.42.1.5

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.caucho:resin, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update com.caucho:resin to 4.0.29 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2012-2966 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

Caucho Quercus, as distributed in Resin before 4.0.29, overwrites entries in the SERVER superglobal array on the basis of POST parameters, which has unspecified impact and remote attack vectors.

O3 Security · Impact-Aware SCA

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