Medium
Moodle: ssrf risk in url downloader via ipv4-mapped ipv6 address bypass
A flaw was found in Moodle. Incorrect handling of IPv4-mapped IPv6 addresses within the URL downloader's host-blocking logic allows an authenticated remote user to bypass blocked-host restrictions. By supplying a crafted URL, an attacker can induce the server to make requests to restricted destinations, leading to Server-Side Request Forgery (SSRF).
Announced Source revision 1
Original source ↗CVE-2026-102577
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-102577
Structured affected-version data
Original package identities and version rules from this source.
[
{
"versions": [
{
"status": "affected",
"version": "5.2.0",
"lessThan": "5.2.2",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.1.0",
"lessThan": "5.1.6",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.0.0",
"lessThan": "5.0.9",
"versionType": "semver"
},
{
"status": "affected",
"version": "0",
"lessThan": "4.5.13",
"versionType": "semver"
}
],
"packageName": "moodle",
"collectionURL": "https://git.moodle.org",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-102577
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #4425 · Revision 1
- Added to Heist Feed
- Publisher date