Trending
CVE-2026-8328

CVE detail

CVE-2026-8328

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 5.9 · MediumBuzz score 39.9

Buzz score

Why this CVE is surfacing

Buzz score total 39.9

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 24.9 · diversity 15.0 · KEV 0.0 · OTX 0.0 · PoC 0.0

Mention score

24.9

11 evidence mentions in the snapshot

Diversity score

15.0

3 sources across 3 categories

KEV score

0.0

No KEV entry observed

OTX score

0.0

0 OTX pulses

PoC score

0.0

0 repos · best confidence N/A

Best PoC traction

Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions: 0; within the 30d window
Peak daily: 0; highest bucket

Evidence

Source links by recency

Newest mentions first

11 source links · newest first

CVE-2026-8328 FTP PASV SSRF, ftpcp() does not use actual peer address, trusts server-supplied PASV host addressMicrosoft MSRC
Information published.
vendormsrc.microsoft.comMay 17, 2026, 8:01 AM
https://mail.python.org/archives/list/[email protected]/thread/ITF2BAPBQEPYK3LDMPRSY435JGNHYNDP/mail.python.org
No excerpt available.
Vendor Advisorymail.python.orgMay 13, 2026, 9:16 PM
https://github.com/python/cpython/pull/149648github.com
No excerpt available.
Exploitgithub.comMay 13, 2026, 9:16 PM
https://github.com/python/cpython/issues/87451github.com
No excerpt available.
Exploitgithub.comMay 13, 2026, 9:16 PM
https://github.com/python/cpython/commit/ef12d0dc824baccf737bba1458e5eed3d1e0fcebgithub.com
No excerpt available.
Exploitgithub.comMay 13, 2026, 9:16 PM
https://github.com/python/cpython/commit/eac4fe3b2c77693790a5ef7dfab127c1fee81bf9github.com
No excerpt available.
Exploitgithub.comMay 13, 2026, 9:16 PM
https://github.com/python/cpython/commit/c88704431ea3248ca769384c13856330976fac1dgithub.com
No excerpt available.
Exploitgithub.comMay 13, 2026, 9:16 PM
https://github.com/python/cpython/commit/bb3446dda6c49b32e67c11dbbbf221b40be00763github.com
No excerpt available.
Exploitgithub.comMay 13, 2026, 9:16 PM
https://github.com/python/cpython/commit/7d95a1dc7382b55cba7fdd6a110336077584a4f0github.com
No excerpt available.
Exploitgithub.comMay 13, 2026, 9:16 PM
https://github.com/python/cpython/commit/5dadc64673ce875ebfb24163907777dae0f6ca06github.com
No excerpt available.
Exploitgithub.comMay 13, 2026, 9:16 PM
https://github.com/python/cpython/commit/2bbcf3fb7a420a05605576c0f9468d4675381b5fgithub.com
No excerpt available.
Exploitgithub.comMay 13, 2026, 9:16 PM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars

No public PoC repositories have been matched yet.

Related records

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External lookup

Potential internet exposure

Potential exposure only — not proof of vulnerability.Shodan results indicate potentially internet-exposed products, not confirmed vulnerable systems. They do not confirm that any returned system is vulnerable to CVE-2026-8328.

Product-level CPE searches intentionally omit version fields and NVD version-range or configuration certainty. Verify the exact product version and configuration independently.

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Product CPE queries

Derived from this CVE's existing NVD CPE 2.3 records; the application, operating-system, or hardware part is retained.

Product query unavailableNo valid raw CPE 2.3 product record is available for this CVE, so no product-level Shodan query is shown.

Exact CVE query

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vuln:CVE-2026-8328Search this CVE on Shodan

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Metadata

Canonical fields

NVD status

Awaiting Analysis

Published

May 13, 2026

Modified

Jun 30, 2026

Official record

Authoritative NVD record

CVSS vector

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

CWE IDs

Vendor classifications

Unavailable

How this vector reads

CVSS 4.0 base metrics decoded below. This explanation does not recalculate or change the NVD score.

Attack Vector (AV): Network. The vulnerable system can be reached across network boundaries.
Attack Complexity (AC): Low. No special conditions beyond the attacker-controlled steps are required.
Attack Requirements (AT): Present. A prerequisite deployment or execution condition must be present.
Privileges Required (PR): None. The attacker needs no privileges on the vulnerable system.
User Interaction (UI): Active. A targeted user must perform a specific action for exploitation to succeed.
Vulnerable System Confidentiality (VC): None. There is no direct impact to this security property.
Vulnerable System Integrity (VI): High. There is a total or serious impact to this security property.
Vulnerable System Availability (VA): None. There is no direct impact to this security property.
Subsequent System Confidentiality (SC): None. There is no direct impact to this security property.
Subsequent System Integrity (SI): None. There is no direct impact to this security property.
Subsequent System Availability (SA): None. There is no direct impact to this security property.

Optional CVSS v4 metrics remain in the raw vector; only base metrics are expanded here.

Signals

Exploitation indicators

0 stored signals · no KEV · 0 OTX pulses