Some of the language is a bit iffy, but mostly it seems on point. I'm not seeing sourcing on attribution to these particular parties though. Perhaps it's taken from another website that signed it in their names?

This is the main instance I noticed of iffy language:

The experiences of the peoples in Palestine, Iraq, Libya, Syria, Sudan, Lebanon and in every country in the southern half of the globe facing colonialism and imperialism cannot be overlooked – true liberation and salvation from reactionary and authoritarian regimes and their change can only come with the action of the people and patriotic leadership – not from Washington or Tel Aviv.

Notably "authoritarian regimes" (pretty meaningless term) and "patriotic leadership" (doesn't always apply, ex: you get patsoc if you apply that to the US)

Edit: Did some more searching, I did find a version of it attributed to Tudeh Party and CPUSA, though I'm not familiar with what websites they are known to use, so I don't know if these are legit:

https://www.tudehpartyiran.org/en/2026/03/05/joint-statement-of-the-communist-parties-of-iran-tudeh-israel-cpi-and-the-united-states-cpusa/

https://www.cpusa.org/article/joint-statement-of-the-communist-parties-of-iran-tudeh-israel-cpi-and-the-u-s-cpusa/