How severe is CVE-2016-6893?

CVE-2016-6893 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-6893 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-2016-6893?

CVE-2016-6893 primarily affects Gnu Mailman. In total, 46 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-6893?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2016-6893 published?

CVE-2016-6893 was published on 2016-09-02 and last updated on 2026-06-17.

CVE-2016-6893

CVE-2016-6893 is a high-severity vulnerability in Gnu Mailman with a CVSS 3.x base score of 8.8. 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-352.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Gnu Mailman
Published: 2016-09-02
Last modified: 2026-06-17

Description

Cross-site request forgery (CSRF) vulnerability in the user options page in GNU Mailman 2.1.x before 2.1.23 allows remote attackers to hijack the authentication of arbitrary users for requests that modify an option, as demonstrated by gaining access to the credentials of a victim's account.

Frequently asked questions

What is CVE-2016-6893?: Cross-site request forgery (CSRF) vulnerability in the user options page in GNU Mailman 2.1.x before 2.1.23 allows remote attackers to hijack the authentication of arbitrary users for requests that modify an option, as demonstrated by gaining access to the credentials of a victim's account.
How severe is CVE-2016-6893?: CVE-2016-6893 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-6893 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-2016-6893?: CVE-2016-6893 primarily affects Gnu Mailman. In total, 46 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-6893?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2016-6893 published?: CVE-2016-6893 was published on 2016-09-02 and last updated on 2026-06-17.

References

Affected products (46)

cpe:2.3:a:gnu:mailman:2.1:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.1:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.2:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.3:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.4:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.5:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.6:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.8:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.9:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.10:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.10:rc1:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.10b1:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.10b3:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.10b4:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.11:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.11:rc1:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.11:rc2:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.12:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.12:rc1:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.12:rc2:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.13:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.13:rc1:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.14:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.14:rc1:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.14-1:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.15:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.15:rc1:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.16:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.16:rc1:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.16:rc2:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.16:rc3:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.17:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.18:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.18:rc1:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.18:rc2:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.18:rc3:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.18-1:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.19:*:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.19:rc1:*:*:*:*:*:*
cpe:2.3:a:gnu:mailman:2.1.19:rc2:*:*:*:*:*:*

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-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…
CVE-2006-2191 — High (CVSS 7.5): Format string vulnerability in Mailman before 2.1.9 allows attackers to execute arbitrary code via unspecified vectors.…

All CVEs affecting Gnu Mailman →

Other CWE-352 (Cross-Site Request Forgery (CSRF)) vulnerabilities

CVE-2025-32642 — Critical (CVSS 10.0): Cross-Site Request Forgery (CSRF) vulnerability in appsbd Vite Coupon vite-coupon allows Remote Code Inclusion.This…
CVE-2025-23922 — Critical (CVSS 10.0): Cross-Site Request Forgery (CSRF) vulnerability in Harsh iSpring Embedder embed-ispring allows Upload a Web Shell to a…
CVE-2017-5145 — Critical (CVSS 10.0): An issue was discovered in Carlo Gavazzi VMU-C EM prior to firmware Version A11_U05, and VMU-C PV prior to firmware…
CVE-2019-25729 — Critical (CVSS 9.8): PDF Signer 3.0 contains a server-side template injection vulnerability that allows unauthenticated attackers to execute…
CVE-2025-48340 — Critical (CVSS 9.8): Cross-Site Request Forgery (CSRF) vulnerability in Danny Vink User Profile Meta Manager user-profile-meta allows…
CVE-2025-2907 — Critical (CVSS 9.8): The Order Delivery Date WordPress plugin before 12.3.1 does not have authorization and CSRF checks when importing…

Browse all CWE-352 (Cross-Site Request Forgery (CSRF)) vulnerabilities →