CVE-2023-4820 PowerPress Podcasting < 11.0.12 - Contributor+ Stored XSS

What is CVE-2023-4820?

CVE-2023-4820 is a medium-severity cross-site scripting vulnerability in Unknown PowerPress Podcasting plugin by Blubrry, published on 16 Oct 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

The PowerPress Podcasting plugin by Blubrry WordPress plugin before 11.0.12 does not sanitize and escape the media url field in posts, which could allow users with privileges as low as contributor to inject arbitrary web scripts that could target a site admin or superadmin.

Which versions are affected by CVE-2023-4820?

It affects 1 product.

Products include Blubrry Powerpress.

How do I fix CVE-2023-4820?

No fix has been published for CVE-2023-4820 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2023-4820 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-4820 exists.

Other vulnerabilities in Unknown PowerPress Podcasting plugin by Blubrry

• CVE-2021-24123 PowerPress < 8.3.8 - Authenticated Arbitrary File Upload leading to RCE High 7.2
• CVE-2023-41239 WordPress PowerPress Podcasting Plugin <= 11.0.6 is vulnerable to Server Side Request Forgery (SSRF) Medium 6.4
• CVE-2024-9230 PowerPress Podcasting < 11.9.18 - Author+ XSS via Podcast URL Medium 5.9
• CVE-2023-30778 WordPress PowerPress Podcasting Plugin <= 10.0.1 is vulnerable to Cross Site Scripting (XSS) Medium 5.5
• CVE-2023-1917 PowerPress <= 10.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Medium 5.4

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-hfr4-7364-jv2q.