CVE-2026-20219 — The REST API Of Cisco Slido Vulnerability

CVE-2026-20219 — The REST API Of Cisco Slido Vulnerability

CVE-2026-20219 — 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 vulne

What This Means For You

  • If your environment is affected by CWE-639, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-20219 updates and patches.

Related ATT&CK Techniques

🛡️ Detection Rules

3 rules · 6 SIEM formats

3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.

high T1190 Initial Access

CVE-2026-20219 - Cisco Slido REST API Insecure Direct Object Reference

Sigma YAML — free preview
title: CVE-2026-20219 - Cisco Slido REST API Insecure Direct Object Reference
id: scw-2026-05-06-ai-1
status: experimental
level: high
description: |
  This rule detects attempts to access or manipulate user profiles, quizzes, or polls via the Cisco Slido REST API using potentially insecure direct object references. The vulnerability CVE-2026-20219 specifically targets these API endpoints, allowing authenticated attackers to view social profile data or alter quiz/poll results. This detection focuses on the specific API paths and HTTP methods likely to be abused.
author: SCW Feed Engine (AI-generated)
date: 2026-05-06
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-20219/
tags:
  - attack.initial_access
  - attack.t1190
logsource:
    category: webserver
detection:
  selection:
      cs-uri|contains:
          - '/api/v1/users/'
          - '/api/v1/quizzes/'
          - '/api/v1/polls/'
      cs-method:
          - 'GET'
          - 'POST'
      condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse

✓ Sigma · Splunk SPL Sentinel KQL Elastic QRadar AQL Wazuh Get rules for your SIEM →

Indicators of Compromise

IDTypeIndicator
CVE-2026-20219 vulnerability CVE-2026-20219
CWE-639 weakness CWE-639
Source & Attribution
Source PlatformNVD
ChannelNational Vulnerability Database
PublishedMay 06, 2026 at 20:16 UTC

This content was curated and summarized by Shimi's Cyber World for informational purposes. It is not copied or republished in full. All intellectual property rights remain with the original author and source.

Believe this infringes your rights? Submit a takedown request.

Related coverage

NanoClaw Container Vulnerability Allows Arbitrary File Access, Recursive Deletion

CVE-2026-7875 — NanoClaw contains a host/container filesystem boundary vulnerability in outbound attachment handling and outbox cleanup that allows a compromised or prompt-injected container to read...

vulnerabilityCVEhigh-severityarbitrary-file-accesscwe-22
/SCW Vulnerability Desk /HIGH /8.8 /⚑ 5 IOCs

CVE-2026-42503: gopls Vulnerability Exposes Dev Environments to RCE

CVE-2026-42503 — gopls by default communicates via pipe. However, -port and -listen flags are supported as means of debugging. If -listen is given a value...

vulnerabilityCVEhigh-severitycwe-1327
/SCW Vulnerability Desk /HIGH /8.8 /⚑ 3 IOCs

CVE-2026-23870: High-Severity DoS Flaw in React Server Components

CVE-2026-23870 — A denial of service vulnerability could be triggered by sending specially crafted HTTP requests to server function endpoints, this could lead to server...

vulnerabilityCVEhigh-severitydenial-of-service
/SCW Vulnerability Desk /HIGH /7.5 /⚑ 4 IOCs