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aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=zaclys.net header.s=default header.b=knDUM4q3; spf=pass (aspmx1.migadu.com: domain of bug-guix-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=bug-guix-bounces@gnu.org X-Migadu-Spam-Score: -5.02 Authentication-Results: aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=zaclys.net header.s=default header.b=knDUM4q3; dmarc=pass (policy=none) header.from=gnu.org; spf=pass (aspmx1.migadu.com: domain of bug-guix-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=bug-guix-bounces@gnu.org X-Migadu-Queue-Id: 2E4721BD2F X-Spam-Score: -5.02 X-Migadu-Scanner: scn0.migadu.com X-TUID: rJYTquHwZ0Fj --=-9giu6ciUzW3V66aTEfoj Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable CVE-2021-28957 21.03.21 06:15 lxml 4.6.2 places the HTML action attribute into defs.link_attrs (in html/defs.py) for later use in input sanitization, but does not do the same for the HTML5 formaction attribute. Upstream fixed it in 4.6.3 ( https://github.com/lxml/lxml/commit/2d01a1ba8984e0483ce6619b972832377f208a0= d ), so we should probably upgrade to that. Has lots of dependents so I suppose it needs grafting? Is that useful and does it work for Python packages? 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