# CVE-2026-82049

## Summary

- **CVE ID:** CVE-2026-82049
- **Severity:** HIGH
- **CVSS Score:** 8.4 (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)
- **CWE:** CWE-59
- **Published:** Sep 14, 2026
- **Last Modified:** Sep 16, 2026

## Description

In CPython 3.13 and earlier, the tarfile module's data and tar extraction filters are vulnerable to crafted archives containing a hard link to a symbolic link. Such archives may cause extraction to modify the permissions or modification time of a file outside the destination directory, or expose the contents of that file within the extracted tree.

## Affected Products

- Python Software Foundation — CPython (0)

## References

- [CNA](https://github.com/python/cpython/pull/157191)
- [CNA](https://github.com/python/cpython/commit/5a57248b22ad3b9aafcaaadae2c304a1923daeca)
- [CNA](https://github.com/python/cpython/issues/157190)
- [CNA](https://mail.python.org/archives/list/security-announce@python.org/thread/EFJWGAZJA56AKSBR2WHMHQZO7RRLZPRH/)
- [CVE](http://www.openwall.com/lists/oss-security/2026/09/14/27)
- [CNA](https://github.com/python/cpython/commit/b38be2e6cf9d989075ab73412c63e003ebad4ff3)
- [CNA](https://github.com/python/cpython/commit/b8f23e307097552eaea2604383a12ab280520d0d)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.18%
- **EPSS Percentile:** 8.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._