CVEvulnerability
CVE-2026-8328
5.9 MEDIUM
Official page ↗
- Status
- Awaiting Analysis
- Published
- 2026-05-13
- Last modified
- 2026-10-26
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Weaknesses
- CWE-918
Description
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.
Related
Weakness · CWE (1)
- CWE-918 Server-Side Request Forgery weakness
References
- https://github.com/python/cpython/commit/2bbcf3fb7a420a05605576c0f9468d4675381b5f github.com
- https://github.com/python/cpython/commit/5dadc64673ce875ebfb24163907777dae0f6ca06 github.com
- https://github.com/python/cpython/commit/7d95a1dc7382b55cba7fdd6a110336077584a4f0 github.com
- https://github.com/python/cpython/commit/bb3446dda6c49b32e67c11dbbbf221b40be00763 github.com
- https://github.com/python/cpython/commit/c88704431ea3248ca769384c13856330976fac1d github.com
- https://github.com/python/cpython/commit/eac4fe3b2c77693790a5ef7dfab127c1fee81bf9 github.com
- https://github.com/python/cpython/commit/ef12d0dc824baccf737bba1458e5eed3d1e0fceb github.com
- https://github.com/python/cpython/issues/87451 github.com
- https://github.com/python/cpython/pull/149648 github.com
- https://mail.python.org/archives/list/[email protected]/thread/ITF2BAPBQEPYK3LDMPRSY435JGNHYNDP/ mail.python.org