Bug 230928 – WebExtension cookie storage expiration date is off by 30 years

• Status: RESOLVED
• Resolution: MOVED
• Component: WebKit Misc.

[Mikhail Labanov]

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)

[Mikhail Labanov]

The same is true for Desktop Safari WebExtension as well

[Radar WebKit Bug Importer]

<rdar://problem/83820804>

[Brent Fulgham]

The fix for this issue needs to be made outside of the WebKit project, therefore marking as "RESOLVED | MOVED".

We believe this issue is fixed in:
iOS 16.0 Beta 1 (and newer)
macOS Ventura Beta 1 (and newer)