CVE-2026-14933
Cross-site scripting in the embedded co-browsing feature in Unblu inc
- Risk score
- 66/100
- CVSS
- 8.6 v4.0
- Exploit chance (30 days)
- 0.6%
- Published
- 20 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- Unblu Spark has a cross-site scripting vulnerability in its embedded co-browsing feature, allowing an unauthenticated attacker to execute arbitrary JavaScript in the agent's browser. This requires an agent to join an embedded co-browsing session with the attacker.
- Affected
- {'products': ['Unblu Spark'], 'packages': [], 'versions': ['7.0 through 7.57.7', '8.0 through 8.39.2']}
- Fix
- Upgrade to a fixed version (check the linked advisory for details)
- Exploitation
- No known exploitation
Why it is Amber
- CVSS 8.6 high
- Remotely exploitable without logging in
References
Original 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.
Last activity 20 Oct 2026. Patch Forecast updates every hour.