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CVE-2021-47857 Moodle 3.10.3 - 'label' Persistent Cross Site Scripting

🗓️ 21 Jan 2026 17:27:39Reported by VulnCheckType 
cvelist
 cvelist
🔗 www.cve.org👁 49 Views

Persistent cross-site scripting in Moodle 3.10.3 calendar event subtitle enables script injection and code execution.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2021-47857
21 Jan 202617:27
–attackerkb
bdu_fstec
BDU FSTEC
Moodle Subtitles XSS
30 Jan 202600:00
–bdu_fstec
cnnvd
CNNVD
Moodle cross-site scripting vulnerabilities
21 Jan 202600:00
–cnnvd
cve
CVE
CVE-2021-47857
21 Jan 202617:27
–cve
euvd
EUVD
EUVD-2026-3616
21 Jan 202617:27
–euvd
mend
Mend
CVE-2021-47857
21 Jan 202617:27
–mend
nvd
NVD
CVE-2021-47857
21 Jan 202618:16
–nvd
osv_bit
osv_bit
BIT-MOODLE-2021-47857 Moodle 3.10.3 - 'label' Persistent Cross Site Scripting
6 Mar 202608:46
–osv_bit
ptsecurity
Positive Technologies
PT-2026-3809
25 Mar 202100:00
–ptsecurity
rapid7
Rapid7 Vulnerability Database (full)
CVE-2021-47857: Improper Neutralization of Input During Web Page Generation
21 Jan 202600:00
–rapid7
Rows per page
[
  {
    "vendor": "Moodle",
    "product": "Moodle",
    "versions": [
      {
        "version": "3.10.3",
        "status": "affected"
      }
    ]
  }
]

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05 Mar 2026 01:28Current
CVSS 45.1
CVSS 3.17.2
EPSS0.00377
SSVC
49