Doesn't seem to be on the IARC's lists of known and probable carcinogens: https://www.cancer.org/cancer/risk-prevention/understanding-...

And yet local production of peroxides by inflammation is probably the causing agent most cancers.

	▲	kragen 5 days ago \| parent [-]
		Well, it's part of the cancer process; most cancers couldn't survive without it. But that's also true of, for example, local production of DNA, or anaerobic glycolysis, or angioneogenesis. It's not true that if you expose tissues to lots of H₂O₂ they'll get cancer.