PowerPress Podcasting plugin by Blubrry: Stored cross-site scripting in block attributes
PowerPress before 11.17.2 lets a Contributor or higher store a block attribute that reaches page output without adequate sanitization or escaping. Script can run in the browser of a user viewing the affected content, including a privileged reviewer. The block, attribute name and rendering function are unspecified.
- Component
- PowerPress Podcasting plugin by Blubrry
- Plugin slug
powerpress- Affected
- < 11.17.2
- Safe version
11.17.2- Published
- Sep 27, 2026
This CVE was published Sep 27, 2026 and is one of 26 known issues for this plugin.
Update, patch or deactivate.
Update to 11.17.2 or a later supported release. Validate block attributes against the intended schema, escape them in their output context and inspect existing block content for malicious values.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The PowerPress Podcasting plugin by Blubrry WordPress plugin before 11.17.2 does not sanitize and escape a block attribute before outputting it in a page, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H