CVE-2026-8328

Aliases:UBUNTU-CVE-2026-8328DEBIAN-CVE-2026-8328ALPINE-CVE-2026-8328CGA-26hq-82c4-mc39CGA-4g64-jw7v-h3vmCGA-6397-4hmj-fqvgCGA-78m4-mcm2-67v9CGA-7jj8-3c27-2fphCGA-98cw-r4c7-g689CGA-f554-wwhh-hxv3CGA-fq4q-w246-9v3qCGA-wmhg-q34j-hx98CGA-x6w8-mwxf-4fqp
Advisory lineage Upstream: 0 Downstream: 23
Awaiting Analysis
Published: 13 May 2026, 20:14
Last modified:13 Aug 2026, 00:26

Vulnerability Summary

Overall Risk (default)
low
24/100
CVSS Score
5.9 MEDIUM
v4.0 (cve.org)
EPSS Score
0.46% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

13 May 2026, 20:14
Published
Vulnerability first disclosed
13 Aug 2026, 00:26
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v4.0•MEDIUM•Score: 5.9CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
  • v4.0•MEDIUM•Score: 5.9CVSS: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

EPSS Trends

Current EPSS score: 0.46%• Percentile: 39%

Techniques & Countermeasures

  • CWE-918•Server-Side Request Forgery (SSRF)

    The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

Affected Systems

  • alpine•python3

    < 3.14.7-r0

  • chainguard•python-3.10

    < 3.10.20-r7

  • chainguard•python-3.11

    < 3.11.15-r5

  • chainguard•python-3.12

    < 3.12.13-r6

  • chainguard•python-3.13

    < 3.13.13-r6

  • chainguard•python-3.14

    < 3.14.5-r1

  • wolfi•python-3.10

    < 3.10.20-r7

  • wolfi•python-3.11

    < 3.11.15-r5

  • wolfi•python-3.12

    < 3.12.13-r6

  • wolfi•python-3.13

    < 3.13.13-r6

  • wolfi•python-3.14

    < 3.14.5-r1

  • debian•pypy3

    all | all | all | all

  • debian•python2.7

    all

  • debian•python3.11

    all

  • debian•python3.13

    < 3.13.5-2+deb13u3 | < 3.13.14-1

  • debian•python3.14

    < 3.14.6-1

  • debian•python3.9

    all

  • ubuntu•python2.7

    all

  • ubuntu•python3.10

    < 3.10.12-1~22.04.16

  • ubuntu•python3.11

    all | all

  • ubuntu•python3.12

    < 3.12.3-1ubuntu0.15

  • ubuntu•python3.13

    all

  • ubuntu•python3.14

    all | < 3.14.4-1ubuntu0.1

  • ubuntu•python3.4

    all

  • ubuntu•python3.5

    all

  • ubuntu•python3.6

    all

  • ubuntu•python3.7

    all

  • ubuntu•python3.8

    all

  • ubuntu•python3.9

    all

  • python software foundation•cpython

    < 3.15.0 | < 3.13.14 | < 3.10.21 | ≥ 3.11.0, < 3.11.16 | ≥ 3.12.0, < 3.12.14 | ≥ 3.13.0, < 3.13.14 | ≥ 3.14.0, < 3.14.6 | ≥ 3.15.0a1, < 3.15.0b2

References (18)