CVE-2026-23798
Published: 05 March 2026
Summary
CVE-2026-23798 is a high-severity Deserialization of Untrusted Data (CWE-502) vulnerability. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 37.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).
Deeper analysis
CVE-2026-23798 is a Deserialization of Untrusted Data vulnerability (CWE-502) in the blubrry PowerPress Podcasting plugin (powerpress) for WordPress, enabling Object Injection. This issue affects the plugin from unknown initial versions through 11.15.10 inclusive.
The vulnerability carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), indicating high severity. It can be exploited remotely over the network by an attacker with low privileges, such as an authenticated WordPress user, using low-complexity techniques without requiring user interaction. Successful exploitation could result in high impacts to confidentiality, integrity, and availability, potentially allowing arbitrary code execution or other severe compromises.
The Patchstack advisory at https://patchstack.com/database/Wordpress/Plugin/powerpress/vulnerability/wordpress-powerpress-podcasting-plugin-11-15-10-php-object-injection-vulnerability?_s_id=cve details this PHP Object Injection vulnerability in version 11.15.10, with mitigation centered on updating the PowerPress Podcasting plugin to a version beyond 11.15.10.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-9595
Vulnerability details
Deserialization of Untrusted Data vulnerability in blubrry PowerPress Podcasting powerpress allows Object Injection.This issue affects PowerPress Podcasting: from n/a through <= 11.15.10.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
PHP object injection in public WordPress plugin directly enables remote exploitation of a public-facing web application for RCE.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Requires timely flaw remediation by updating the vulnerable PowerPress plugin beyond version 11.15.10 to eliminate the deserialization vulnerability.
Mandates validation of untrusted inputs to block malicious serialized data from being deserialized, directly countering CWE-502 object injection.
Facilitates vulnerability scanning to identify the presence of the vulnerable PowerPress plugin version and trigger remediation.