01 Record
CVE-2021-42771
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.
UnratedPUBLISHEDCNA: mitre
CNA base scoreUnratedNo CNA CVSS vector
02 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.
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.77% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 55.1% of scored records. A rank, not a probability.
- NVD base score
- 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-10-20 20:05Z5 YR AGO
- Last updated
- 2024-08-04 03:38Z2 YR AGO
- Reserved
- 2021-10-20
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')Base
- Data version
- 5.1
- Document digest
- 174a078b4c1b6df42c5f2c4f00fe91390feeb5e523f8ae54ab057a83391b0b1a
05 Affected products
VendorProductVersionsPlatforms
06 References
- www.tenable.comhttps://www.tenable.com/security/research/tra-2021-14
- github.comhttps://github.com/python-babel/babel/pull/782
- lists.debian.orghttps://lists.debian.org/debian-lts/2021/10/msg00040.html
- lists.debian.org[debian-lts-announce] 20211021 [SECURITY] [DLA 2790-1] python-babel security updatehttps://lists.debian.org/debian-lts-announce/2021/10/msg00018.html
- www.debian.orgDSA-5018https://www.debian.org/security/2021/dsa-5018
07 Fixed in
AlmaLinux 8
- babel Fixed in 2.5.1-10.module_el8.6.0+2781+fed64c13
- python-nose-docs Fixed
A version is affected if any line below covers it.
- Affected before 1.3.7-31.module_el8.5.0+2569+5c5719bc
- Affected before 1.3.7-31.module_el8.6.0+2781+fed64c13
- python-psycopg2-doc Fixed in 2.7.5-7.module_el8.6.0+2781+fed64c13
- python-sqlalchemy-doc Fixed
A version is affected if any line below covers it.
- Affected before 1.3.2-2.module_el8.5.0+2569+5c5719bc
- Affected before 1.3.2-2.module_el8.6.0+2781+fed64c13
- python2-Cython Fixed in 0.28.1-7.module_el8.6.0+2781+fed64c13
- python2-PyMySQL Fixed in 0.8.0-10.module_el8.6.0+2781+fed64c13
- python2-attrs Fixed in 17.4.0-10.module_el8.6.0+2781+fed64c13
- python2-babel Fixed in 2.5.1-10.module_el8.6.0+2781+fed64c13
- python2-backports Fixed in 1.0-16.module_el8.6.0+2781+fed64c13
- python2-backports-ssl_match_hostname Fixed in 3.5.0.1-12.module_el8.6.0+2781+fed64c13
- python2-bson Fixed in 3.7.0-1.module_el8.6.0+2781+fed64c13
- python2-chardet Fixed in 3.0.4-10.module_el8.6.0+2781+fed64c13
- python2-coverage Fixed in 4.5.1-4.module_el8.6.0+2781+fed64c13
- python2-dns Fixed in 1.15.0-10.module_el8.6.0+2781+fed64c13
- python2-docs Fixed in 2.7.16-2.module_el8.6.0+2781+fed64c13
- python2-docs-info Fixed in 2.7.16-2.module_el8.6.0+2781+fed64c13
- python2-docutils Fixed in 0.14-12.module_el8.6.0+2781+fed64c13
- python2-funcsigs Fixed in 1.0.2-13.module_el8.6.0+2781+fed64c13
- python2-idna Fixed in 2.5-7.module_el8.6.0+2781+fed64c13
- python2-ipaddress Fixed in 1.0.18-6.module_el8.6.0+2781+fed64c13
- python2-jinja2 Fixed in 2.10-9.module_el8.6.0+2781+fed64c13
- python2-markupsafe Fixed in 0.23-19.module_el8.6.0+2781+fed64c13
- python2-mock Fixed in 2.0.0-13.module_el8.6.0+2781+fed64c13
- python2-nose Fixed in 1.3.7-31.module_el8.6.0+2781+fed64c13
- python2-numpy Fixed in 1:1.14.2-16.module_el8.6.0+2781+fed64c13
- python2-numpy-doc Fixed in 1:1.14.2-16.module_el8.6.0+2781+fed64c13
- python2-numpy-f2py Fixed in 1:1.14.2-16.module_el8.6.0+2781+fed64c13
- python2-pluggy Fixed in 0.6.0-8.module_el8.6.0+2781+fed64c13
- python2-psycopg2 Fixed in 2.7.5-7.module_el8.6.0+2781+fed64c13
- python2-psycopg2-debug Fixed in 2.7.5-7.module_el8.6.0+2781+fed64c13
- python2-psycopg2-tests Fixed in 2.7.5-7.module_el8.6.0+2781+fed64c13
- python2-py Fixed in 1.5.3-6.module_el8.6.0+2781+fed64c13
- python2-pygments Fixed in 2.2.0-22.module_el8.6.0+2781+fed64c13
- python2-pymongo Fixed in 3.7.0-1.module_el8.6.0+2781+fed64c13
- python2-pymongo-gridfs Fixed in 3.7.0-1.module_el8.6.0+2781+fed64c13
- python2-pysocks Fixed in 1.6.8-6.module_el8.6.0+2781+fed64c13
- python2-pytest Fixed in 3.4.2-13.module_el8.6.0+2781+fed64c13
- python2-pytest-mock Fixed in 1.9.0-4.module_el8.6.0+2781+fed64c13
- python2-pytz Fixed in 2017.2-12.module_el8.6.0+2781+fed64c13
- python2-pyyaml Fixed in 3.12-16.module_el8.6.0+2781+fed64c13
53 further packages in AlmaLinux 8 not shown (first 40 listed).
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- babel Fixed in 2.5.1-10.module_el8.6.0+2781+fed64c13
- python-nose-docs Fixed
A version is affected if any line below covers it.
- Affected before 1.3.7-31.module_el8.5.0+2569+5c5719bc
- Affected before 1.3.7-31.module_el8.6.0+2781+fed64c13
- python-psycopg2-doc Fixed in 2.7.5-7.module_el8.6.0+2781+fed64c13
- python-sqlalchemy-doc Fixed
A version is affected if any line below covers it.
- Affected before 1.3.2-2.module_el8.5.0+2569+5c5719bc
- Affected before 1.3.2-2.module_el8.6.0+2781+fed64c13
- python2-Cython Fixed in 0.28.1-7.module_el8.6.0+2781+fed64c13
- python2-PyMySQL Fixed in 0.8.0-10.module_el8.6.0+2781+fed64c13
- python2-attrs Fixed in 17.4.0-10.module_el8.6.0+2781+fed64c13
- python2-babel Fixed in 2.5.1-10.module_el8.6.0+2781+fed64c13
- python2-backports Fixed in 1.0-16.module_el8.6.0+2781+fed64c13
- python2-backports-ssl_match_hostname Fixed in 3.5.0.1-12.module_el8.6.0+2781+fed64c13
- python2-bson Fixed in 3.7.0-1.module_el8.6.0+2781+fed64c13
- python2-chardet Fixed in 3.0.4-10.module_el8.6.0+2781+fed64c13
- python2-coverage Fixed in 4.5.1-4.module_el8.6.0+2781+fed64c13
- python2-dns Fixed in 1.15.0-10.module_el8.6.0+2781+fed64c13
- python2-docs Fixed in 2.7.16-2.module_el8.6.0+2781+fed64c13
- python2-docs-info Fixed in 2.7.16-2.module_el8.6.0+2781+fed64c13
- python2-docutils Fixed in 0.14-12.module_el8.6.0+2781+fed64c13
- python2-funcsigs Fixed in 1.0.2-13.module_el8.6.0+2781+fed64c13
- python2-idna Fixed in 2.5-7.module_el8.6.0+2781+fed64c13
- python2-ipaddress Fixed in 1.0.18-6.module_el8.6.0+2781+fed64c13
- python2-jinja2 Fixed in 2.10-9.module_el8.6.0+2781+fed64c13
- python2-markupsafe Fixed in 0.23-19.module_el8.6.0+2781+fed64c13
- python2-mock Fixed in 2.0.0-13.module_el8.6.0+2781+fed64c13
- python2-nose Fixed in 1.3.7-31.module_el8.6.0+2781+fed64c13
- python2-numpy Fixed in 1:1.14.2-16.module_el8.6.0+2781+fed64c13
- python2-numpy-doc Fixed in 1:1.14.2-16.module_el8.6.0+2781+fed64c13
- python2-numpy-f2py Fixed in 1:1.14.2-16.module_el8.6.0+2781+fed64c13
- python2-pluggy Fixed in 0.6.0-8.module_el8.6.0+2781+fed64c13
- python2-psycopg2 Fixed in 2.7.5-7.module_el8.6.0+2781+fed64c13
- python2-psycopg2-debug Fixed in 2.7.5-7.module_el8.6.0+2781+fed64c13
- python2-psycopg2-tests Fixed in 2.7.5-7.module_el8.6.0+2781+fed64c13
- python2-py Fixed in 1.5.3-6.module_el8.6.0+2781+fed64c13
- python2-pygments Fixed in 2.2.0-22.module_el8.6.0+2781+fed64c13
- python2-pymongo Fixed in 3.7.0-1.module_el8.6.0+2781+fed64c13
- python2-pymongo-gridfs Fixed in 3.7.0-1.module_el8.6.0+2781+fed64c13
- python2-pysocks Fixed in 1.6.8-6.module_el8.6.0+2781+fed64c13
- python2-pytest Fixed in 3.4.2-13.module_el8.6.0+2781+fed64c13
- python2-pytest-mock Fixed in 1.9.0-4.module_el8.6.0+2781+fed64c13
- python2-pytz Fixed in 2017.2-12.module_el8.6.0+2781+fed64c13
- python2-pyyaml Fixed in 3.12-16.module_el8.6.0+2781+fed64c13
53 further packages in CloudLinux 8 not shown (first 40 listed).
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- python-babel Fixed in 2.8.0+dfsg.1-7
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- python-babel Fixed in 2.8.0+dfsg.1-7
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- python-babel Fixed in 2.8.0+dfsg.1-7
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.