CVE-2021-42771

HIGH
7.8
CVSS Score
Published: October 20, 2021 at 08:05 PM UTC
Updated: June 17, 2026 at 04:10 AM UTC
2 products affected across 2 vendorsDebian LinuxBabel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.8%

Description

Babel.Locale in Babel before 2.9.1 allows attackers to load arbitrary locale .dat files (containing serialized Python objects) via directory traversal, leading to code execution.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.9.1
Affected range stops below 2.9.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (5)

x_refsource_MISCPatchThird Party Advisory
https://github.com/python-babel/babel/pull/782
Mailing Listx_refsource_MLISTThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00018.html
x_refsource_MISCMailing ListThird Party Advisory
https://lists.debian.org/debian-lts/2021/10/msg00040.html
Vendor Advisoryx_refsource_DEBIANThird Party Advisory
https://www.debian.org/security/2021/dsa-5018
x_refsource_MISCExploitThird Party Advisory
https://www.tenable.com/security/research/tra-2021-14

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-22

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