# 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.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 May 2026
- **Updated:** 6 May 2026
- **Also known as:** GHSA-83ch-55jw-xp9w

## 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 (Authorization Bypass Through User-Controlled Key)

## 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.

## Is CVE-2026-20219 being exploited?

There is no known exploitation of CVE-2026-20219 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-20219 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-20219 in the wild and no public exploit code.

Affected product: Cisco Slido. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-20219/ (Markdown: https://insights.sbomify.com/CVE-2026-20219/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-20219
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-20219
- OSV: https://osv.dev/vulnerability/CVE-2026-20219

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-20219/
Summaries are generated and may contain mistakes; the official description above is the record.