PYSEC-2026-738

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PYSEC-2026-738

Summary: open redirect in pollbot

Details: (From https://bugzilla.mozilla.org/show_bug.cgi?id=1753838) Summary: There was an open redirection vulnerability in the path of: https://pollbot.services.mozilla.com/ and https://pollbot.stage.mozaws.net/ Description: An attacker can redirect anyone to malicious sites. Steps To Reproduce: Type in this URL: https://pollbot.services.mozilla.com/%0a/evil.com/ It redirects to that website evil.com evil.com was used as an example but this could be any website. Note, the /%0a/ and trailing / are required. Supporting Material/References: https://cheatsheetseries.owasp.org/cheatsheets/Unvalidated_Redirects_and_Forwards_Cheat_Sheet.html Impact Attackers can serve malicious websites that steal passwords or download ransomware to their victims machine due to a redirect and there are a heap of other attack vectors.

References: https://github.com/mozilla/PollBot/security/advisories/GHSA-vg27-hr3v-3cqv, https://nvd.nist.gov/vuln/detail/CVE-2022-0637, https://github.com/mozilla/PollBot/pull/360, https://github.com/mozilla/PollBot/commit/e39d8bec2df582ba525bb2e2f33c3ebc584d7ff8, https://bugzilla.mozilla.org/show_bug.cgi?id=1753838, https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2022-0637, https://github.com/mozilla/PollBot, https://pypi.org/project/pollbot, https://github.com/advisories/GHSA-vg27-hr3v-3cqv