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Vulnerability record · CVE-2025-13837 · published 1 December 2025

CVE-2025-13837: Python uncontrolled resource consumption vulnerability

Python · Python

When loading a plist file, the plistlib module reads data in size specified by the file itself, meaning a malicious file can cause OOM and DoS issues

2.1 CVSS 4.0 Low EPSS 0.24% · top 84.9% CWE-400 · Uncontrolled resource consumption
2.1CVSS 4.0 base score
0.24%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
9References
3 Sep 2026Last modified by NVD

Description

When loading a plist file, the plistlib module reads data in size specified by the file itself, meaning a malicious file can cause OOM and DoS issues

CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:L/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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/python/cpython/commit/568342cfc8f002d9a15f30238f26b9d2e0e79036
https://github.com/python/cpython/commit/5a8b19677d818fb41ee55f310233772e15aa1a2b Patch
https://github.com/python/cpython/commit/694922cf40aa3a28f898b5f5ee08b71b4922df70 Patch
https://github.com/python/cpython/commit/71fa8eb8233b37f16c88b6e3e583b461b205d1ba Patch
https://github.com/python/cpython/commit/b64441e4852383645af5b435411a6f849dd1b4cb Patch
https://github.com/python/cpython/commit/cefee7d118a26ef6cd43db59bb9d98ca9a331111
https://github.com/python/cpython/issues/119342 Issue TrackingPatch
https://github.com/python/cpython/pull/119343 Issue TrackingPatch
https://mail.python.org/archives/list/security-announce@python.org/thread/2X5IBCJXRQAZ5PSERLHMSJFBHFR3QM2C/ Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2025-13837), CISA KEV, FIRST EPSS (scores of 2026-11-13). This page is refreshed as NVD updates the record.