GHSA-3ggm-c5m7-hfv5: Spatie Laravel Media Library contains a file upload restriction bypass
Spatie Laravel Media Library before version 11.23.0 contains a file upload restriction bypass in FileAdder::defaultSanitizer(). The sanitizer checks only the final filename suffix, allowing double-extension filenames such as shell.php.jpg to bypass the blocklist, with pathinfo() preserving inner .php stems in saved filenames. The blocklist also omits executable extensions including .php6, .shtml, and .htaccess. The double-extension bypass requires a legacy Apache AddHandler configuration to achieve PHP execution; the incomplete blocklist bypass does not.
Details
Original advisory: https://github.com/advisories/GHSA-3ggm-c5m7-hfv5
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-485570.44% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 35% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-48557 | coverage & exploitation status | NVD · CVE.org |
More from GitHub Security Advisories
- criticalGHSA-g936-7jqj-mwv8: TSDProxy: Internal proxy auth token forwarded to backend services enables management API …2026-07-10
- highGHSA-fpg8-7664-jc5q: melange: Incomplete package integrity verification allows data section substitution2026-07-10
- mediumGHSA-48rx-c7pg-q66r: Excon does not redact additional sensitive/risky headers when following redirects2026-07-10
- highGHSA-h4g2-xfmw-q2c9: Clauster: Non-loopback deployments can serve the dashboard unauthenticated when auth.enab…2026-07-10
- mediumGHSA-rqq5-2gf9-4w4q: Secure Headers: CSP directive injection via sandbox, plugin_types, and report_to when giv…2026-07-10