CVE-2026-102577
4.3
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
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).
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
5.2.0 < 5.2.2 | affected | ||
5.1.0 < 5.1.6 | affected | ||
5.0.0 < 5.0.9 | affected | ||
0 < 4.5.13 | affected |
Weaknesses
- CWE-918: Server-Side Request Forgery (SSRF)
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
- http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-88779
- https://access.redhat.com/security/cve/CVE-2026-102577
- https://bugzilla.redhat.com/show_bug.cgi?id=2543604
- https://moodle.org/mod/forum/discuss.php?d=482495
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