CVE-2026-57958 — Mixpost 2.6.0 - Reflected XSS via OAuth Callback Error Parameter
Mixpost through 2.6.0 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to execute arbitrary JavaScript in authenticated users' brows…
Published: 2026-06-29 · CVSS: 5.1 · CVSS 4.0
Mixpost through 2.6.0 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to execute arbitrary JavaScript in authenticated users' browsers by crafting malicious OAuth callback URLs with unsanitized error query parameters. Attackers can exploit the OAuth callback controller's failure to sanitize error parameters before rendering them through Laravel flash messages via the Vue v-html directive to hijack authenticated user sessions or perform unauthorized actions.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7