| Platform |  | Pricing | Only free issues | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 55 | Founded | 3 years ago | Last Issue | 15 days ago |
| Active | |||||
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blog.calif.ioLatest Issues
Squidbleed (CVE-2026-47729)
Two weeks ago, we dropped an HTTP/2 bomb cooked up by Codex Cyber. This time, we sent Claude Mythos Preview spelunking through Squid’s guts, and it surfaced clutching a 29-year-old bug.
Meet Squidbleed: a Heartbleed-style vulnerability tha...
Apple Internals: Swift in the Kernel
After WWDC, I saw Devon Maloney posted a slide saying Apple has “started writing parts of the core operating system kernel in Swift” for the 27 releases. First steps toward a memory-safe kernel. What does this even mean?!
Naturally I dropp...
How to format a ciphertext
A few nights ago Thomas Ptacek shared a link to CVE-2026-34182 in OpenSSL with the note:
one-byte tag vulnerability, everyone has to take a drink, that's the rule.
The same bug turned out to be in wolfSSL (CVE-2026-5500), Bouncy Castle,...
OOBdump: Relocation Oriented Programming
We have a thing for finding bugs in bug finding tools. IDA Pro, Ghidra, Binja Sidekick, or radare2. You name it we hacked it. Our friends were saying we should try objdump. So here we go.
objdump -g should be boring. It reads an object f...
Codex Discovered a Hidden HTTP/2 Bomb
We’re publishing HTTP/2 Bomb, a remote denial-of-service exploit against most major web servers, including:
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nginx
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Apache httpd
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Microsoft IIS
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Envoy
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Cloudflare Pingora
The vulnerable behavior exists in each server...
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