ADOBE CONNECT · CVE-2026-121904 · Vendor
FIX → 12.12.a +4 ✓ verified
Adobe Connect has a stored cross-site scripting flaw in some form fields. A low-privileged attacker can save malicious JavaScript that runs in the browser of anyone who opens the affected page, potentially taking over their session or account.
first public Nov 10, 2026 · 2 sources
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Self-hosted Adobe Connect on Windows, version 12.12 and earlier, is listed as affected. An attacker with a low-privileged account can store a script (user interaction needed) that runs in another user's browser, enabling session or account takeover. Adobe's bulletin does not say which form fields are vulnerable, and lists only Windows for this bulletin. Adobe says no exploits in the wild are known.
Not affected if unknown
Who cares adobe-connect, self-hosted, windows, xss
Upgrade to 12.12.a +4
Adobe Connect is affected by a stored Cross-Site Scripting (XSS) vulnerability that could be abused by a low-privileged attacker to inject malicious scripts into vulnerable form fields. Malicious JavaScript may be executed in a victim's browser when they browse to the page containing the vulnerable field, potentially gaining elevated access or control over the victim's account or session. Scope is changed.
This page as .md · .json · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
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Update Adobe Connect (Windows) to 12.12.a, 12.11.i, 12.10.f, 12.9.a or 12.8.a (whichever branch you run), per APSB26-191.