CVE-2014-2966: The ISO-8859-1 encoder in Resin Pro before 4.0.40 does not properly perform Unicode transformations, which all

Q: How do I fix CVE-2014-2966?

resin: upgrade to newer than 4.0.39. Exact commands for each OS are on this page.

Q: Is CVE-2014-2966 being exploited?

CVE-2014-2966 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-2014-2966 affect?

CVE-2014-2966 affects resin. Severity is medium (CVSS 5.0). The ISO-8859-1 encoder in Resin Pro before 4.0.40 does not properly perform Unicode transformations, which allows remote attackers to bypass intended text restrictions via crafted characters, as demonstrated by bypassing an XSS protection m

Q: How urgent is CVE-2014-2966?

Priority 37/100. No elevated risk signals yet.

Routine

MEDIUM 5.0UPGRADE

CVE-2014-2966 is a medium-severity flaw (CVSS 5.0) affecting resin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The ISO-8859-1 encoder in Resin Pro before 4.0.40 does not properly perform Unicode transformations, which allows remote attackers to bypass intended text restrictions via crafted characters, as demonstrated by bypassing an XSS protection mechanism.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Weakness	CWE-20, CWE-264
Published	2014-07-26
Last modified	2026-06-17

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

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2014-07-26 15:55 UTCPublished CVE record published
2026-06-17 00:07 UTCUpdated Record last modified

caucho resin UPGRADE

Affected: <= 4.0.39 · 4.0.36 · 4.0.37 · 4.0.38

Fixed in: newer than 4.0.39

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 4.0.39 (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-2014-2966?

resin: upgrade to newer than 4.0.39. Exact commands for each OS are on this page.

Is CVE-2014-2966 being exploited?

CVE-2014-2966 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-2014-2966 affect?

CVE-2014-2966 affects resin. Severity is medium (CVSS 5.0). The ISO-8859-1 encoder in Resin Pro before 4.0.40 does not properly perform Unicode transformations, which allows remote attackers to bypass intended text restrictions via crafted characters, as demonstrated by bypassing an XSS protection m

How urgent is CVE-2014-2966?

Priority 37/100. No elevated risk signals yet.

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References

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