AIKIDO-2026-879554
libcurl is vulnerable to Information Disclosure
37
Low Risk
This Affects:
libcurlTL;DR
A Set-Cookie header that puts a tab, instead of a space, immediately before the Secure attribute stores the cookie without the Secure flag. curl can then send that cookie on a later plaintext HTTP request to the same host. The fix accepts a tab as the separator before Secure.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you store cookies from untrusted HTTP responses.
Background info
libcurl is vulnerable to Information Disclosure in versions 8.13.0 - 8.21.0.
How to fix this
Upgrade the libcurl and/or the curl.curl library to the patch version.
Links
GitHub Release
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