CVE-2026-20219 Missing authorization in Cisco Slido
Authenticated attackers can access other users' social profiles or modify quiz and poll results via insecure direct object references in the REST API.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-20219?
CVE-2026-20219 is a medium-severity missing authorization vulnerability in Cisco Slido, published on 6 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability in the REST API of Cisco Slido could have allowed an authenticated, remote attacker to access the social profile data of other users or affect quiz and poll results. Cisco has addressed this vulnerability in Cisco Slido and no customer action is needed. This vulnerability existed because of the presence of an insecure direct object reference. Prior to this vulnerability being addressed, an attacker could have exploited this vulnerability by sending a crafted request to the vulnerable API endpoint. A successful exploit could have allowed the attacker to view the social profiles of other users or affect quiz and poll results.
Weakness: CWE-639
Which versions are affected by CVE-2026-20219?
How do I fix CVE-2026-20219?
No fix has been published for CVE-2026-20219 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-20219 being exploited?
There is no known exploitation of CVE-2026-20219 in the wild and no public exploit code.
Sources
Also known as GHSA-83ch-55jw-xp9w.