CVE-2026-113584 Placester CVE debrief

Who should care

WordPress administrators and security teams should assess exposure and prioritize remediation for this critical vulnerability. This vulnerability affects WordPress installations using the placester plugin version 1.4.3 or earlier. Security teams should review the CVE record and NVD entry for additional details and verify the version of the placester WordPress plugin in their environment.

Why it matters

Defenders should prioritize verifying and remediating this critical vulnerability in their WordPress installations, especially those with the placester plugin version 1.4.3 or earlier, as it allows unauthenticated attackers to overwrite user email addresses and potentially take over accounts.

• Unauthenticated attackers can overwrite user email addresses, potentially leading to account takeover.
• The vulnerability has a high CVSS score of 9.8, indicating a critical severity level.
• Successful exploitation could allow attackers to gain control of user accounts, including administrator accounts.

Technical summary

The placester WordPress plugin through 1.4.3 is vulnerable to an unauthenticated attack that allows overwriting of user email addresses, potentially leading to account takeover. The vulnerability exists due to a lack of capability, nonce, or ownership checks on an AJAX action that updates account details. This allows attackers to overwrite any user's email address, including an administrator's, and take over the account through the standard password-reset flow. The vulnerability has a high CVSS score of 9.8, indicating a critical severity level.

Defensive priority

Defenders should prioritize verifying and remediating this vulnerability in their WordPress installations, especially those with the placester plugin version 1.4.3 or earlier.

Recommended defensive actions

• Verify the version of the placester WordPress plugin and update to a patched version if available.
• Implement additional monitoring to detect potential exploitation attempts.
• Restrict access to the WordPress installation and limit the privileges of user accounts.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its CVSS score of 9.8 and the affected plugin version. The vulnerability was publicly disclosed on 2026-11-06T06:16:39.943Z. There are no known exploits in the wild, but defenders should verify the version of the placester WordPress plugin and update to a patched version if available. Evidence is limited to CVE and NVD details.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.