CVE-2021-42771

Public Exploit

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.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.15%
Vendor Advisory debian.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.tenable.com/security/research/tra-2021-14 third party advisory exploit
https://github.com/python-babel/babel/pull/782 third party advisory patch
https://lists.debian.org/debian-lts/2021/10/msg00040.html third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2021/10/msg00018.html third party advisory mailing list
https://www.debian.org/security/2021/dsa-5018 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-42771?
CVE-2021-42771 has been scored as a high severity vulnerability.
How to fix CVE-2021-42771?
To fix CVE-2021-42771, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-42771 being actively exploited in the wild?
It is possible that CVE-2021-42771 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.