MSA-21-0007: Stored XSS and blind SSRF possible via feedback answer text

MSA-21-0007: Stored XSS and blind SSRF possible via feedback answer text

by Michael Hawkins -
Number of replies: 0

Text-based feedback answers required additional sanitizing to prevent stored XSS and blind SSRF risks.


Severity/Risk: Serious
Versions affected: 3.10 to 3.10.1, 3.9 to 3.9.4, 3.8 to 3.8.7, 3.5 to 3.5.16 and earlier unsupported versions
Versions fixed: 3.10.2, 3.9.5, 3.8.8 and 3.5.17
Reported by: Holme and Rekter0
CVE identifier: CVE-2021-20280
Changes (master): http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-70767
Tracker issue: MDL-70767 Stored XSS and blind SSRF possible via feedback answer text