---
title: "CVE-2026-82049: CPython - Path Traversal"
description: "CPython <= 3.13 contains a symlink & hard link vulnerability in the tarfile module's data and extraction filters, letting attackers modify file metadata or expose file contents outside the extraction directory, exploit requires crafted archive."
url: https://panop.io/threat-heartbeat/CVE-2026-82049/
---

# CVE-2026-82049 CPython - Path Traversal

CPython <= 3.13 contains a symlink & hard link vulnerability in the tarfile module's data and extraction filters, letting attackers modify file metadata or expose file contents outside the extraction directory, exploit requires crafted archive.

CVSS base score 8.4 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.19% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-82049)

## Details

Type

Path Traversal

Impact

Information Disclosure, Data Tampering

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/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

Published

14 September 2026

Updated

15 October 2026

Weakness

[CWE-59](https://cwe.mitre.org/data/definitions/59.html)

## Vendor fix

Update to a version later than 3.13 or apply relevant patches.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-82049](https://nvd.nist.gov/vuln/detail/CVE-2026-82049)
- [https://github.com/python/cpython/commit/b38be2e6cf9d989075ab73412c63e003ebad4ff3](https://github.com/python/cpython/commit/b38be2e6cf9d989075ab73412c63e003ebad4ff3)
- [https://github.com/python/cpython/commit/b8f23e307097552eaea2604383a12ab280520d0d](https://github.com/python/cpython/commit/b8f23e307097552eaea2604383a12ab280520d0d)
- [https://github.com/python/cpython/commit/197663d63afed27f66e10e23c194e8a634e60913](https://github.com/python/cpython/commit/197663d63afed27f66e10e23c194e8a634e60913)
- [https://github.com/python/cpython/commit/c66df4e70435d257fd488b35ea129c6f317433a8](https://github.com/python/cpython/commit/c66df4e70435d257fd488b35ea129c6f317433a8)
- [https://github.com/python/cpython/commit/5a57248b22ad3b9aafcaaadae2c304a1923daeca](https://github.com/python/cpython/commit/5a57248b22ad3b9aafcaaadae2c304a1923daeca)
- [https://github.com/python/cpython/pull/157191](https://github.com/python/cpython/pull/157191)
- [https://github.com/python/cpython/commit/28f315486b3da0352b9a1de1c3c97f4127ba4771](https://github.com/python/cpython/commit/28f315486b3da0352b9a1de1c3c97f4127ba4771)
- [https://github.com/python/cpython/commit/cc1689830c6b9aaddded2fb9f2fe8116867e2c0e](https://github.com/python/cpython/commit/cc1689830c6b9aaddded2fb9f2fe8116867e2c0e)
- [https://github.com/python/cpython/commit/cccc7ec30212dba2abef53ce4a2bed112ddb690c](https://github.com/python/cpython/commit/cccc7ec30212dba2abef53ce4a2bed112ddb690c)
- [https://github.com/python/cpython/issues/157190](https://github.com/python/cpython/issues/157190)
- [https://mail.python.org/archives/list/security-announce@python.org/thread/EFJWGAZJA56AKSBR2WHMHQZO7RRLZPRH/](https://mail.python.org/archives/list/security-announce@python.org/thread/EFJWGAZJA56AKSBR2WHMHQZO7RRLZPRH/)
- [http://www.openwall.com/lists/oss-security/2026/09/14/27](http://www.openwall.com/lists/oss-security/2026/09/14/27)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

[Book a demo](https://panop.io/demo)