CVE-2012-2969: Caucho Quercus, as distributed in Resin before 4.0.29, allows remote attackers to bypass intended restrictions

Q: How do I fix CVE-2012-2969?

resin: upgrade to newer than 4.0.28. Exact commands for each OS are on this page.

Q: Is CVE-2012-2969 being exploited?

CVE-2012-2969 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2012-2969 affect?

CVE-2012-2969 affects resin. Severity is medium (CVSS 6.4). Caucho Quercus, as distributed in Resin before 4.0.29, allows remote attackers to bypass intended restrictions on filename extensions for created files via a %00 sequence in a pathname within an HTTP request.

Q: How urgent is CVE-2012-2969?

Priority 45/100. No elevated risk signals yet.

This month

MEDIUM 6.4UPGRADE

CVE-2012-2969 is a medium-severity flaw (CVSS 6.4) affecting resin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Caucho Quercus, as distributed in Resin before 4.0.29, allows remote attackers to bypass intended restrictions on filename extensions for created files via a %00 sequence in a pathname within an HTTP request.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.4 (Medium)
EPSS exploit chance	3.5% (top 11%)
CISA exploited list	No
Weakness	CWE-264
Published	2012-08-12
Last modified	2026-06-16

Publisher (CNA): CERT/CC · Vendor: caucho

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2012-08-12 16:55 UTCPublished CVE record published
2026-06-16 23:42 UTCUpdated Record last modified

caucho resin UPGRADE

Affected: <= 4.0.28 · 2.0.0 · 2.0.1 · 2.0.2 · 2.0.3 · 2.0.4 · 2.0.5 · 2.1.0

Fixed in: newer than 4.0.28

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy resin || rpm -q resin || resin --version

2. UPGRADE to newer than 4.0.28 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade resin

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade resin

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2012-2969?

resin: upgrade to newer than 4.0.28. Exact commands for each OS are on this page.

Is CVE-2012-2969 being exploited?

CVE-2012-2969 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2012-2969 affect?

CVE-2012-2969 affects resin. Severity is medium (CVSS 6.4). Caucho Quercus, as distributed in Resin before 4.0.29, allows remote attackers to bypass intended restrictions on filename extensions for created files via a %00 sequence in a pathname within an HTTP request.

How urgent is CVE-2012-2969?

Priority 45/100. No elevated risk signals yet.

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References

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