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CVE-2021-43558: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

November 22, 2021 (updated December 21, 2022)

A URL parameter in the filetype site administrator tool requires extra sanitizing to prevent a reflected XSS risk.

References

  • bugzilla.redhat.com/show_bug.cgi?id=2021515
  • moodle.org/mod/forum/discuss.php?d=429097
  • nvd.nist.gov/vuln/detail/CVE-2021-43558

Code Behaviors & Features

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Affected versions

All versions up to 3.8.8, all versions starting from 3.9.0 before 3.9.11, all versions starting from 3.10.0 before 3.10.8, all versions starting from 3.11.0 before 3.11.4

Fixed versions

  • 3.8.9
  • 3.9.11
  • 3.10.8
  • 3.11.4

Solution

Upgrade to versions 3.8.9, 3.9.11, 3.10.8, 3.11.4 or above.

Impact 6.1 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Learn more about CVSS

Weakness

  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Source file

packagist/moodle/moodle/CVE-2021-43558.yml

Spotted a mistake? Edit the file on GitLab.

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