Quick answers
- Is CVE-2026-19435 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-19435 being exploited in the wild.
- How severe is CVE-2026-19435?
- Low severity, with a CVSS score of 2.7, published 21 August 2026.
- Which products and versions are affected?
- Yoast Duplicate Post before 1.5.6.
- Is there a fix for CVE-2026-19435?
- A patch was published on 2026: Fixed in version 1.5.6 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-19435 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-19435?
- Check whether you run Yoast Duplicate Post at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The plugin fails to enforce capability checks in its AJAX handler (cdp_action_handling action with f=get_all_posts function), allowing any authenticated user present in the plugin's role access settings to retrieve all posts across any status (published, private, draft, future, pending, inherit, sticky) regardless of author or intended access restrictions. The vulnerability requires two conditions: the plugin must be active and an administrator must have explicitly added a low-privilege role (such as Subscriber) to the plugin's role access configuration (a documented but off-by-default setting). Attackers can extract full post content, metadata including protected keys prefixed with underscores, and cleartext post passwords. The attack is post-authentication but requires no additional user interaction. Patched in version 1.5.6.
Affected products
- Yoast Duplicate Post before 1.5.6
Timeline
- 2026-08-19: disclosed
- 2026-08-21: advisory
- 2026: patched: Fixed in version 1.5.6