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CVE-2024-21503

🗓️ 19 Mar 2024 05:00:01Reported by Alpine Linux Development TeamType 
alpinelinux
 alpinelinux🔗 security.alpinelinux.org👁 58 Views

Versions of package black prior to 24.3.0 are susceptible to a Regular Expression Denial of Service (ReDoS) via the lines_with_leading_tabs_expanded function in strings.py, allowing for denial of service when processing untrusted input or excessive leading tab characters in docstrings

Related
Packages
ReporterTitlePublishedViews
Family
ibm
IBM Security Bulletins		Security Bulletin: Vulnerability in Python Software Foundation Black ( CVE-2024-21503) may affect IBM watsonx Assistant for IBM Cloud Pak for Data
28 Jan 202522:08
–ibm
ibm
IBM Security Bulletins		Security Bulletin: Vulnerability inPython Software Foundation Black affects IBM watsonx Assistant Cartridge and IBM watsonx Orchestrate with watsonx Assistant Cartridge - Assistant Builder Component.
13 Mar 202517:30
–ibm
ibm
IBM Security Bulletins		Security Bulletin: Vulnerability in Python Software Foundation Black ( CVE-2024-21503) may affect IBM watsonx Assistant for IBM Cloud Pak for Data
28 Jan 202522:08
–ibm
ibm
IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities addressed in Cloudera Base on premises Cloudera Runtime 7.3.1.700 SP3 CHF 2
9 Mar 202617:07
–ibm
bdu_fstec
BDU FSTEC		The vulnerability of the lines_with_leading_tabs_expanded() function in the strings.py file of the Python coding formatting tool Black allows a attacker to cause a service failure.
1 Apr 202400:00
–bdu_fstec
cgr
Chainguard		CVE-2024-21503 vulnerabilities
22 Mar 202516:12
–cgr
circl
Circl		CVE-2024-21503
19 Mar 202406:26
–circl
cnnvd
CNNVD		black Security breach
19 Mar 202400:00
–cnnvd
cve
CVE		CVE-2024-21503
19 Mar 202405:00
–cve
cvelist
Cvelist		CVE-2024-21503
19 Mar 202405:00
–cvelist
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Alpine Linux3.19anyblack23.12.0-r0black-23.12.0-r0.apk
Alpine Linuxanyanyblack24.3.0-r0black-24.3.0-r0.apk
Alpine Linux3.20anyblack24.3.0-r0black-24.3.0-r0.apk
Alpine Linux3.21anyblack24.3.0-r0black-24.3.0-r0.apk
Alpine Linux3.22anyblack24.3.0-r0black-24.3.0-r0.apk
Alpine Linux3.23anyblack24.3.0-r0black-24.3.0-r0.apk
Alpine Linux3.24anyblack24.3.0-r0black-24.3.0-r0.apk

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17 Jun 2026 07:09Current
5.1Medium risk
Vulners AI Score5.1
CVSS 3.15.3
EPSS0.00979
SSVC
package blackversion 24.3.0regular expression denial of serviceredoslines_with_leading_tabs_expanded functionstrings.pydenial of serviceuntrusted inputdocstrings
58