How severe is CVE-2018-13796?

CVE-2018-13796 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2018-13796 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-13796?

CVE-2018-13796 affects Gnu Mailman. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-13796?

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

When was CVE-2018-13796 published?

CVE-2018-13796 was published on 2018-07-12 and last updated on 2026-06-17.

CVE-2018-13796

CVE-2018-13796 is a medium-severity vulnerability in Gnu Mailman with a CVSS 3.x base score of 6.5. 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Gnu Mailman
Published: 2018-07-12
Last modified: 2026-06-17

Description

An issue was discovered in GNU Mailman before 2.1.28. A crafted URL can cause arbitrary text to be displayed on a web page from a trusted site.

Frequently asked questions

What is CVE-2018-13796?: An issue was discovered in GNU Mailman before 2.1.28. A crafted URL can cause arbitrary text to be displayed on a web page from a trusted site.
How severe is CVE-2018-13796?: CVE-2018-13796 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2018-13796 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-13796?: CVE-2018-13796 affects Gnu Mailman. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-13796?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-13796 published?: CVE-2018-13796 was published on 2018-07-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gnu:mailman:*:*:*:*:*:*:*:*

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