AUGUST 4, 2026
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Case File

CVE-2021-40347

MEDIUM · CVSS 5.4 EPSS 1.18%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-09-10 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.4. See the original NVD description below for full technical details.

CVE
CVE-2021-40347
Severity
MEDIUM
CVSS
5.4
EPSS
1.18%

Original NVD Description

An issue was discovered in views/list.py in GNU Mailman Postorius before 1.3.5. An attacker (logged into any account) can send a crafted POST request to unsubscribe any user from a mailing list, also revealing whether that address was subscribed in the first place.

Related CVEs

Other vulnerabilities affecting the same vendor(s)