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CVE-2026-21860

🗓️ 08 Jan 2026 18:34:05Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 26 Views

CVE-2026-21860: Werkzeug safe_join allowed Windows device names with extensions or trailing spaces prior to version 3.1.5.

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Detection
Affected
Refs
ReporterTitlePublishedViews
Family
IBM Security Bulletins
Security Bulletin: There is a vulnerability in werkzeug-3.1.4-py3-none-any.whl used by IBM Maximo Manage application in IBM Maximo Application Suite (CVE-2026-21860)
3 Mar 202604:12
ibm
IBM Security Bulletins
Security Bulletin: Security vulnerability in Python affects IBM Robotic Process Automation and IBM Robotic Process Automation for Cloud Pak
14 May 202613:58
ibm
IBM Security Bulletins
Security Bulletin: Vulnerability in Werkzeug affects IBM Netezza Appliance
16 Apr 202610:33
ibm
IBM Security Bulletins
Security Bulletin: IBM Watson Discovery Cartridge affected by vulnerability in werkzeug-3.1.4-py3-none-any.whl
5 Feb 202620:19
ibm
IBM Security Bulletins
Security Bulletin: Location Service for ESRI Component uses werkzeug-3.1.4 and urllib3-2.6.2 library which were vulnerable to CVE-2026-21860 and CVE-2026-21441 respectively
6 Mar 202607:07
ibm
IBM Security Bulletins
Security Bulletin: Maximo AI Service uses werkzeug-3.1.4-py3-none-any.whl, filelock-3.20.1-py3-none-any.whl which is vulnerable to CVE-2026-21860 and CVE-2026-22701.
31 Mar 202612:54
ibm
IBM Security Bulletins
Security Bulletin: IBM InfoSphere Information Server is affected by multiple vulnerabilities in Werkzeug
2 Feb 202619:09
ibm
IBM Security Bulletins
Security Bulletin: Vulnerability assertj-core, spring-security-crypto, werkzeug, urllib, libsodium, jersey-client, log4j, dmidecode-dmidecode, and aide affect IBM Cloud Object Storage Systems (FEB 2026)
27 Feb 202617:30
ibm
IBM Security Bulletins
Security Bulletin: IBM Maximo Application Suite - Predict Component was using vulnerable library werkzeug-3.1.4 which is vulnerable to CVE-2026-21860
27 Mar 202608:10
ibm
IBM Security Bulletins
Security Bulletin: IBM Watson Speech Services Cartridge is vulnerable to a denial of service in Werkzeug [CVE-2026-21860]
27 Feb 202615:42
ibm
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NVD
Vulners
[
  {
    "vendor": "pallets",
    "product": "werkzeug",
    "versions": [
      {
        "version": "< 3.1.5",
        "status": "affected"
      }
    ]
  }
]

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02 Feb 2026 17:15Current
6.5Medium risk
Vulners AI Score6.5
CVSS 3.15.3
CVSS 46.3
EPSS0.00024
SSVC
26