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Medium severity5.4NVD Advisory· Published Mar 15, 2021· Updated Jun 17, 2026

CVE-2021-20280

CVE-2021-20280

Description

Text-based feedback answers required additional sanitizing to prevent stored XSS and blind SSRF risks in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
moodle/moodlePackagist	>= 3.10, < 3.10.2	3.10.2
moodle/moodlePackagist	>= 3.9, < 3.9.5	3.9.5
moodle/moodlePackagist	>= 3.8, < 3.8.8	3.8.8
moodle/moodlePackagist	>= 3.5, < 3.5.17	3.5.17

Affected products

7

Moodle/Moodle
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
Range: >=3.5.0,<3.5.17
Fedoraproject/Fedora3 versions
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
moodle/moodledescription
osv-coords2 versions
pkg:bitnami/moodle pkg:composer/moodle/moodle
>= 3.5.0, < 3.5.17+ 1 more
- (no CPE)range: >= 3.5.0, < 3.5.17
- (no CPE)range: >= 3.10, < 3.10.2

Patches

Vulnerability mechanics

References

12

moodle.org/mod/forum/discuss.phpnvdPatchVendor AdvisoryWEB
packetstormsecurity.com/files/164817/Moodle-Cross-Site-Scripting-Server-Side-Request-Forgery.htmlnvdExploitThird Party AdvisoryVDB EntryWEB
bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party AdvisoryWEB
github.com/advisories/GHSA-x2jp-hh65-4xvfghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2021-20280ghsaADVISORY
github.com/moodle/moodle/commit/a303eb9e9e387f95ea2a80cb1ce6c0b132ec1cc4ghsaWEB
lists.fedoraproject.org/archives/list/[email protected]/message/AFSNJ7XHVTC52RSRX2GBQFF3VEEAY2MSghsaWEB
lists.fedoraproject.org/archives/list/[email protected]/message/FGOMHMYM3WICJ6D6U22Z6LPJGT5A6MZMghsaWEB
lists.fedoraproject.org/archives/list/[email protected]/message/UFH5DDMU5TZ3JT4Q52WMRAHACA5MHIMTghsaWEB
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AFSNJ7XHVTC52RSRX2GBQFF3VEEAY2MS/nvd
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FGOMHMYM3WICJ6D6U22Z6LPJGT5A6MZM/nvd
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UFH5DDMU5TZ3JT4Q52WMRAHACA5MHIMT/nvd

News mentions

0

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