Adobe

CVE-2026-121904: Adobe Connect | Cross-site Scripting (Stored XSS) (CWE-79)

Is it exploited?

Not on CISA's list. CISA has not added it to the Known Exploited Vulnerabilities catalog as of 10 Nov 2026. If CISA adds it, this page shows it as known exploited.

How likely is exploitation in the next 30 days?

0.7%

EPSS score, percentile 55.2 of all scored records. A probability estimated by FIRST, not a report of exploitation.

How severe?

9.6 Critical

CVSS v3.1 base score, given by the CNA

What should I do?

CISA has set no required action, because the vulnerability is not in KEV.

Advisories and patches (1)

Which versions are affected?

Affected

12.8 and earlier
12.9 and earlier
12.10 and earlier
12.11 and earlier
12.12 and earlier

Unaffected 12.8.a; 12.9.a; 12.10.f; 12.11.i; 12.12.a

Versions by product

Source: CISA KEV 2026.11.10, as of 10 Nov 2026; FIRST EPSS, as of 12 Nov 2026; CVE List, as of 12 Nov 2026. About the data.

Description

Adobe Connect | Cross-site Scripting (Stored XSS) (CWE-79)

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.

Source: CVE List, as of 12 Nov 2026. About the data.

What to do

Advisories and patches

adobe.com (Vendor advisory)

This summary is based on the CVE record as of 12 Nov 2026. Check the vendor's advisory before you act: affected versions and fixes can change.