[Webkit-unassigned] [Bug 230928] New: WebExtension cookie storage expiration date is of by 30 years

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=230928

            Bug ID: 230928
           Summary: WebExtension cookie storage expiration date is of by
                    30 years
           Product: WebKit
           Version: Other
          Hardware: iPhone / iPad
                OS: Other
            Status: NEW
          Severity: Critical
          Priority: P2
         Component: WebKit Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: maikudou at gmail.com

Steps to reproduce

1. Create a web extension for iOS 15
2. In context of WebExtension's background page set a cookie for a domain:
window.browser.cookies.set({
   name: 'mycookie',
   value: '123',
   url: "https://www.example.com",
   domain: ".example.com",
   expirationDate: Date.now()/1000 + 60*60
})

Expected outcome:
A cookie "mycookie" is set with expiration date of now + 1 hour for the example.com domain

Real outcome:
A cookie with expiration date exactly 30 years in the future + 1 hour is created
(year 2052 as at the time of this bug is filed)

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