CVE-2012-4950: Cross-site scripting (XSS) vulnerability in the Keyword Search page in the web interface in Pattern Insight 2.

Routine

MEDIUM 4.3DOWNGRADE

CVE-2012-4950 is a medium-severity flaw (CVSS 4.3) affecting pattern insight. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in the Keyword Search page in the web interface in Pattern Insight 2.3 allows remote attackers to inject arbitrary web script or HTML via crafted characters that are not properly handled during construction of error messages.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Weakness	CWE-79
Published	2012-11-18
Last modified	2026-06-16

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

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

Am I affected?

Timeline

2012-11-18 21:55 UTCPublished CVE record published
2026-06-16 23:45 UTCUpdated Record last modified

patterninsight pattern insight DOWNGRADE

Affected: 2.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.3

1. Check installed version

apt-cache policy pattern-insight || rpm -q pattern-insight || pattern-insight --version

2. No fixed release: DOWNGRADE to a release before 2.3 (Debian / Ubuntu)

apt-cache madison pattern-insight sudo apt install pattern-insight=<VERSION_BEFORE_2.3> sudo apt-mark hold pattern-insight

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list pattern-insight sudo dnf downgrade pattern-insight-<VERSION_BEFORE_2.3> sudo dnf versionlock add pattern-insight

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2012-4950?

pattern insight: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2012-4950 being exploited?

CVE-2012-4950 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-2012-4950 affect?

CVE-2012-4950 affects pattern insight. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in the Keyword Search page in the web interface in Pattern Insight 2.3 allows remote attackers to inject arbitrary web script or HTML via crafted characters that are not properly handled during const

How urgent is CVE-2012-4950?

Priority 33/100. No elevated risk signals yet.

Related CVEs

CVE-2012-4938 LOW 3.5 DOWNGRADE Cross-site scripting (XSS) vulnerability in the web interface in Pattern Insight 2.3 allows remote authenticat
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CVE-2012-4936 MEDIUM 6.8 DOWNGRADE The web interface in Pattern Insight 2.3 allows remote attackers to conduct clickjacking attacks via a FRAME e
CVE-2012-4935 MEDIUM 6.8 DOWNGRADE Cross-site request forgery (CSRF) vulnerability in the web interface in Pattern Insight 2.3 allows remote atta

References

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