CVE-2026-8328 (GCVE-0-2026-8328)

Vulnerability from cvelistv5 – Published: 2026-05-13 20:14 – Updated: 2026-08-13 00:26
VLAI
Title
FTP PASV SSRF, ftpcp() does not use actual peer address, trusts server-supplied PASV host address
Summary
The ftpcp() function in Lib/ftplib.py was not updated when CVE-2021-4189 was fixed. While makepasv() was patched to replace server-supplied PASV host addresses with the actual peer address (getpeername()[0]), ftpcp() still calls parse227() directly and passes the raw attacker-controllable IP address and port to target.sendport(). This patch is related to CVE-2021-4189.
Severity
5.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-14 12:49 UTC
CWE
  • CWE-918 - Server-Side request forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version CPE status
Python Software Foundation CPython Affected: 0 , < 3.10.21 (python)
Affected: 3.11.0 , < 3.11.16 (python)
Affected: 3.12.0 , < 3.12.14 (python)
Affected: 3.13.0 , < 3.13.14 (python)
Affected: 3.14.0 , < 3.14.6 (python)
Affected: 3.15.0a1 , < 3.15.0b2 (python)
guessed Create a notification for this product.
Credits
Qi Deng (https://github.com/ikow) Bénédikt Tran (https://github.com/picnixz) Gregory P. Smith (https://github.com/gpshead)
Show details on NVD website
To clipboard 

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