How severe is CVE-2012-5496?

CVE-2012-5496 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2012-5496 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-5496?

CVE-2012-5496 primarily affects Plone. In total, 49 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-5496?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2012-5496 published?

CVE-2012-5496 was published on 2014-09-30 and last updated on 2026-06-16.

CVE-2012-5496

CVE-2012-5496 is a medium-severity vulnerability in Plone with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Plone
Published: 2014-09-30
Last modified: 2026-06-16

Description

kupu_spellcheck.py in Kupu in Plone before 4.0 allows remote attackers to cause a denial of service (ZServer thread lock) via a crafted URL.

Frequently asked questions

What is CVE-2012-5496?: kupu_spellcheck.py in Kupu in Plone before 4.0 allows remote attackers to cause a denial of service (ZServer thread lock) via a crafted URL.
How severe is CVE-2012-5496?: CVE-2012-5496 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2012-5496 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-5496?: CVE-2012-5496 primarily affects Plone. In total, 49 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-5496?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-5496 published?: CVE-2012-5496 was published on 2014-09-30 and last updated on 2026-06-16.

References

Affected products (49)

cpe:2.3:a:plone:plone:*:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:1.0:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:1.0.4:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:1.0.5:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:1.0.6:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:2.0:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:2.0.1:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:2.0.2:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:2.0.3:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:2.0.4:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:2.0.5:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:2.1:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:2.1.1:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:2.1.2:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:2.1.3:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:2.1.4:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:2.5:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:2.5.1:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:2.5.2:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:2.5.3:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:2.5.4:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:2.5.5:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:3.0:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:3.0.1:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:3.0.2:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:3.0.3:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:3.0.4:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:3.0.5:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:3.0.6:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:3.1:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:3.1.1:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:3.1.2:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:3.1.3:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:3.1.4:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:3.1.5.1:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:3.1.6:*:*:*:*:*:*:*
cpe:2.3:a:plone:plone:3.1.7:*:*:*:*:*:*:*

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