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NVD Vulnerability Details :
CVE-2026-11972
Awaiting Analysis
More InfoOfficial Page
Source-cna@python.org
View Known Exploited Vulnerability (KEV) details
Published At-23 Jun, 2026 | 23:16
Updated At-30 Jun, 2026 | 16:16

When using the "tarfile" module with a file opened in "streaming mode" (mode="r|") the tarfile module did not properly handle EOF, making archive parsing take exponentially longer.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.08.2HIGH
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/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
N/A
Type: Secondary
Version: 4.0
Base score: 8.2
Base severity: HIGH
Vector:
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/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
Type: N/A
Version:
Base score:
Base severity: N/A
Vector:
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-252Secondarycna@python.org
CWE-606Secondarycna@python.org
CWE-770Secondarycna@python.org
CWE ID: CWE-252
Type: Secondary
Source: cna@python.org
CWE ID: CWE-606
Type: Secondary
Source: cna@python.org
CWE ID: CWE-770
Type: Secondary
Source: cna@python.org
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/python/cpython/commit/3f031d431f80668e14f3bc066bbf4369cd9281b9cna@python.org
N/A
https://github.com/python/cpython/commit/4ce6bf7c8aa7725828a38981c306f214c1f29365cna@python.org
N/A
https://github.com/python/cpython/commit/7f0dc59c9a70f8f3b4da33d7c4a2ba552a7acc21cna@python.org
N/A
https://github.com/python/cpython/commit/e86666c9dd256d52d0fbef6feb1ea4a51768fdeccna@python.org
N/A
https://github.com/python/cpython/commit/eb63c0f94dfcbea7fda8eab6213818e134d67192cna@python.org
N/A
https://github.com/python/cpython/commit/f50bf13566189c8d0ce5a814f33eff3d89951896cna@python.org
N/A
https://github.com/python/cpython/issues/151981cna@python.org
N/A
https://github.com/python/cpython/pull/151982cna@python.org
N/A
https://mail.python.org/archives/list/security-announce@python.org/thread/AXPSKKTSRKXTTJULW3XSIC74WZNAAPPB/cna@python.org
N/A
Hyperlink: https://github.com/python/cpython/commit/3f031d431f80668e14f3bc066bbf4369cd9281b9
Source: cna@python.org
Resource: N/A
Hyperlink: https://github.com/python/cpython/commit/4ce6bf7c8aa7725828a38981c306f214c1f29365
Source: cna@python.org
Resource: N/A
Hyperlink: https://github.com/python/cpython/commit/7f0dc59c9a70f8f3b4da33d7c4a2ba552a7acc21
Source: cna@python.org
Resource: N/A
Hyperlink: https://github.com/python/cpython/commit/e86666c9dd256d52d0fbef6feb1ea4a51768fdec
Source: cna@python.org
Resource: N/A
Hyperlink: https://github.com/python/cpython/commit/eb63c0f94dfcbea7fda8eab6213818e134d67192
Source: cna@python.org
Resource: N/A
Hyperlink: https://github.com/python/cpython/commit/f50bf13566189c8d0ce5a814f33eff3d89951896
Source: cna@python.org
Resource: N/A
Hyperlink: https://github.com/python/cpython/issues/151981
Source: cna@python.org
Resource: N/A
Hyperlink: https://github.com/python/cpython/pull/151982
Source: cna@python.org
Resource: N/A
Hyperlink: https://mail.python.org/archives/list/security-announce@python.org/thread/AXPSKKTSRKXTTJULW3XSIC74WZNAAPPB/
Source: cna@python.org
Resource: N/A
Change History
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