Keyword cannibalization is a situation, where multiple pages on a website target the same keyword. When this happens, those pages end up competing with each other for rankings in SERPs. This can lead to confusion for search engines, making it difficult for them to determine which page is the most relevant and authoritative for that particular keyword.

The main issue with keyword cannibalization is that it dilutes the authority and relevance signals that search engines use to rank pages. Instead of consolidating authority on a single page, it spills the juice across multiple pages (URLs).

If you need to fix keyword cannibalization on your site, you should check and update your site structure, content strategy, and internal linking. Try to focus topical content into a single complete, comprehensive page and optimize it for related keywords. You may also use canonical tag to help you guide search engines through your content pages.