CVE-2026-102577BIT-MOODLE-2026-102577
Moodle: ssrf risk in url downloader via ipv4-mapped ipv6 address bypass
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 5.2.2, 5.1.6, 5.0.9, 4.5.13
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
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).
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- moodle
From 5.2.0 · fixed in 5.2.2; From 5.1.0 · fixed in 5.1.6; From 5.0.0 · fixed in 5.0.9; fixed in 4.5.13
- moodleBitnami
fixed in 4.5.13; From 5.0.0 · fixed in 5.0.9; From 5.1.0 · fixed in 5.1.6; From 5.2.0 · fixed in 5.2.2