PT-2025-17397 · Unknown · Gnu Mailman

Firudin Davudzada + 1 · Published 2025-04-19 · Updated 2025-04-21 · CVE-2025-43919

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions GNU Mailman versions 2.1.39

Description The issue allows unauthenticated attackers to read arbitrary files via ../ directory traversal at /mailman/private/mailman, also known as the private archive authentication endpoint, using the username parameter.

Recommendations For GNU Mailman version 2.1.39, as a temporary workaround, consider restricting access to the /mailman/private/mailman endpoint until a patch is available. Avoid using the username parameter in the affected endpoint to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Path traversal

Weakness Enumeration

CWE-22

CWE-24

Related Identifiers

BDU:2026-00163

CVE-2025-43919

Affected Products

Gnu Mailman

References · 16

• 🔥 https://github.com/0NYX-MY7H/CVE-2025-43919 · Exploit
• https://osv.dev/vulnerability/CVE-2025-43919 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-43919 · Security Note
• https://bdu.fstec.ru/vul/2026-00163 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-43919 · Security Note
• https://ubuntu.com/security/CVE-2025-43919 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-43919 · Vendor Advisory
• https://github.com/cpanel/mailman2-python3 · Note
• https://t.me/cvetracker/22011 · Telegram Post
• https://t.me/cvenotify/119056 · Telegram Post
• https://twitter.com/CVEnew/status/1913823701528633506 · Twitter Post
• https://openwall.com/lists/oss-security/2025/04/21/6 · Note
• https://t.me/cvedetector/23403 · Telegram Post
• https://twitter.com/WolfgangSesin/status/1913909298259706260 · Twitter Post
• https://twitter.com/oss_security/status/1914366528763371589 · Twitter Post