CVE-2026-14933 Unblu Spark Cross-Site Scripting in Embedded Co-Browsing
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-14933?
CVE-2026-14933 is a high-severity vulnerability in Unblu Spark, published on 20 Oct 2026.
Official description
Cross-site scripting in the embedded co-browsing feature in Unblu inc. Unblu Spark 7.0 through 7.57.7 and 8.0 through 8.39.2, on on-premises and cloud deployments, allows an unauthenticated remote attacker in the visitor role to execute arbitrary JavaScript in the browser of an agent taking part in the attacker's co-browsing session, via content of the co-browsed page that the agent's browser renders as HTML.
The JavaScript runs in the context and under the identity of the agent's session in the Agent Desk or the Single Conversation Desk.
Exploitation requires an agent to join an embedded co-browsing session with the attacker. Mobile co-apping isn't affected.
Weakness: CWE-79
Which versions are affected by CVE-2026-14933?
How do I fix CVE-2026-14933?
No fix has been published for CVE-2026-14933 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-14933 being exploited?
There is no known exploitation of CVE-2026-14933 in the wild and no public exploit code.
Sources
Also known as GHSA-9p8h-2662-3xvr.