How severe is CVE-2020-12108?

CVE-2020-12108 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-2020-12108 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-12108?

CVE-2020-12108 primarily affects Gnu Mailman. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-12108?

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

When was CVE-2020-12108 published?

CVE-2020-12108 was published on 2020-05-06 and last updated on 2026-06-17.

CVE-2020-12108

CVE-2020-12108 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-74.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Gnu Mailman
Published: 2020-05-06
Last modified: 2026-06-17

Description

/options/mailman in GNU Mailman before 2.1.31 allows Arbitrary Content Injection.

Frequently asked questions

What is CVE-2020-12108?: /options/mailman in GNU Mailman before 2.1.31 allows Arbitrary Content Injection.
How severe is CVE-2020-12108?: CVE-2020-12108 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-2020-12108 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-12108?: CVE-2020-12108 primarily affects Gnu Mailman. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-12108?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-12108 published?: CVE-2020-12108 was published on 2020-05-06 and last updated on 2026-06-17.

References

Affected products (10)

cpe:2.3:a:gnu:mailman:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
cpe:2.3:a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:*
cpe:2.3:a:opensuse:backports_sle:15.0:sp2:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

More vulnerabilities in Gnu Mailman

CVE-2021-44227 — High (CVSS 8.8): In GNU Mailman before 2.1.38, a list member or moderator can get a CSRF token and craft an admin request (using that…
CVE-2016-7123 — High (CVSS 8.8): Cross-site request forgery (CSRF) vulnerability in the admin web interface in GNU Mailman before 2.1.15 allows remote…
CVE-2016-6893 — High (CVSS 8.8): Cross-site request forgery (CSRF) vulnerability in the user options page in GNU Mailman 2.1.x before 2.1.23 allows…
CVE-2021-42097 — High (CVSS 8.0): GNU Mailman before 2.1.35 may allow remote Privilege Escalation. A csrf_token value is not specific to a single user…
CVE-2005-4153 — High (CVSS 7.8): Mailman 2.1.4 through 2.1.6 allows remote attackers to cause a denial of service via a message that causes the server…
CVE-2015-2775 — High (CVSS 7.6): Directory traversal vulnerability in GNU Mailman before 2.1.20, when not using a static alias, allows remote attackers…

All CVEs affecting Gnu Mailman →

Other CWE-74 (Improper Neutralization of Special Elements (Injection)) vulnerabilities

CVE-2026-105135 — Critical (CVSS 10.0): A vulnerability has been found in InternLM MindSearch 0.1.0. This issue affects the function ExecutionAction.run of the…
CVE-2026-61732 — Critical (CVSS 10.0): Decepticon is an autonomous hacking agent for red teams. Versions prior to 1.1.17 wrap web crawl results — the output…
CVE-2026-94097 — Critical (CVSS 10.0): A vulnerability was determined in Netcore NBR200V2 1.3.241127.071246. This affects an unknown part of the file…
CVE-2026-20130 — Critical (CVSS 10.0): As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Identity Services Engine…
CVE-2026-82971 — Critical (CVSS 10.0): A vulnerability was determined in QVidium Opera11 3.3.2a26-Ax4x-opera11. This affects an unknown part of the file…
CVE-2026-54159 — Critical (CVSS 10.0): PrestaShop ps_facetedsearch is a module that adds layered navigation filters. From 3.0.0 until 4.0.4, the…

Browse all CWE-74 (Improper Neutralization of Special Elements (Injection)) vulnerabilities →