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CVE-2020-13671: Drupal core Un-restricted Upload of File

criticalknown exploitedCVE-2020-13671
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Improper sanitization in the extension file names is present in Drupal core.

CSIRTS triage

What
Improper sanitization in the extension file names is present in Drupal core.
Who is affected
Deployments of Drupal core are affected.
Urgency
Remediation is urgent due to active exploitation and critical severity.
Action
Apply the latest security patch for Drupal core.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2022-01-18
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2020-13671

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2020-13671coverage & exploitation statusNVD · CVE.org

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