How severe is CVE-2010-4339?

CVE-2010-4339 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2010-4339 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-4339?

CVE-2010-4339 affects Hypermail-project Hypermail. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2010-4339?

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

When was CVE-2010-4339 published?

CVE-2010-4339 was published on 2011-01-14 and last updated on 2026-06-16.

CVE-2010-4339

CVE-2010-4339 is a medium-severity vulnerability in Hypermail-project Hypermail with a CVSS 2.0 base score of 4.3. 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-79.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Hypermail-project Hypermail
Published: 2011-01-14
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in Hypermail 2.2.0 allows remote attackers to inject arbitrary web script or HTML via a crafted From address, which is not properly handled when indexing messages.

Frequently asked questions

What is CVE-2010-4339?: Cross-site scripting (XSS) vulnerability in Hypermail 2.2.0 allows remote attackers to inject arbitrary web script or HTML via a crafted From address, which is not properly handled when indexing messages.
How severe is CVE-2010-4339?: CVE-2010-4339 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2010-4339 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-4339?: CVE-2010-4339 affects Hypermail-project Hypermail. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2010-4339?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-4339 published?: CVE-2010-4339 was published on 2011-01-14 and last updated on 2026-06-16.

References

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=598743

Affected products (1)

cpe:2.3:a:hypermail-project:hypermail:2.2.0:*:*:*:*:*:*:*

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