CVE-2026-13346

MEDIUM

6.5

CVSS v3

Description

pip would incorrectly handle doubly-encoded package URLs from indexes allowing for files to be installed to arbitrary locations on disk even when installing wheels. This vulnerability requires downloading or installing a package from a malicious package index to succeed, malicious packages alone are not able to exploit this vulnerability. Note that this vulnerability only materially impacts users running `pip download` with the `--only-binary` option as installing source distributions from an untrusted index is already an unsafe operation that executes code during install time.

CWE-36

How to fix

Remediation Available

pythonRocky

Fixed in:pip-main@noarchRHSA-2026:48788

Fixed in:pip-main@srcRHSA-2026:48788

pythonRed Hat / RHEL

Fixed in:pip-main@srcRHSA-2026:48788

Fixed in:pip-main@noarchRHSA-2026:48788

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Exploit Intelligence

0.29%probability of exploitation in 30 days

21stpercentile

Low risk: more likely to be exploited than 21% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory2

Related Vulnerabilities

Other CWE-36 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-13159	Critical	9.8	100%	KEV	Fix
CVE-2018-20250	High	7.8	96%	KEV + Ransom	-
CVE-2024-48248	High	8.6	94%	KEV	Fix
CVE-2024-13160	Critical	9.8	91%	KEV	Fix
CVE-2024-13161	Critical	9.8	90%	KEV	Fix
CVE-2023-3765	Critical	10.0	68%	-	Fix

Common questions

How do I fix CVE-2026-13346?

Published advisories record a fix for 2 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2026-13346 being actively exploited?

Not that we know of. CVE-2026-13346 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.29% is the estimated probability that it will be exploited in the next 30 days. That is higher than 21% of all scored CVEs.

How severe is CVE-2026-13346?

CVE-2026-13346 has a CVSS v3 base score of 6.5, rated moderate. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-13346 affect?

Published advisories record a fix for python (Rocky), python (Red Hat / RHEL). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-08-20.