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TLS Certificate Lifetimes Will Officially Reduce to 47 Days (in 2029) (www.digicert.com)
submitted 1 week ago by JRaccoon@discuss.tchncs.de to c/sysadmin@lemmy.world
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From today until March 15, 2026, the maximum lifetime for a TLS certificate is 398 days.

As of March 15, 2026, the maximum lifetime for a TLS certificate will be 200 days.

As of March 15, 2027, the maximum lifetime for a TLS certificate will be 100 days.

As of March 15, 2029, the maximum lifetime for a TLS certificate will be 47 days.

What's everyone's opinion on this? I think from a security standpoint their reasoning is valid and in many cases it's very easy to automate the renewal with ACME or something else. But there's likely gonna be legacy stuff still around in 2029 that won't be easy to automate.

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[-] SecureTaco@lemmy.asc6.org 4 points 1 week ago

Self signed certs still have to abide. It’s the browser that checks it not the issuer. Now granted in most cases you already get a non trusted warning that most sysadmins skip…

[-] Zeoic@lemmy.world 2 points 1 week ago

The cert is what tells the browser how long it lasts, so I'm not sure how the browser can stop you from using a 10 year self signed cert or one from your own CA

[-] catloaf@lemm.ee 1 points 1 week ago

If the browser sees it expires too far in the future, it could throw a warning or error.

I doubt any of them will actually do it, but it's possible.

this post was submitted on 15 Apr 2025
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