CVE-2026-14643

A flaw was found in undici. The cache interceptor in undici improperly handles optional whitespace around the equals sign in no-cache or private Cache-Control directives. This vulnerability allows an attacker to bypass cache restrictions, leading to cross-user information disclosure. Specifically...

undici vulnerable to cross-user information disclosure via whitespace around equals in Cache-Control directives

Impact Undici's cache interceptor mishandles optional whitespace OWS placed around the = of a qualified no-cache or private Cache-Control directive, such as no-cache ="authorization" OWS before = or no-cache= "authorization" OWS after =. The parser either drops the directive entirely or stores a...

CVE-2026-9678

Impact: Undici's cache interceptor incorrectly classifies some responses as cacheable when the upstream Cache-Control header uses whitespace-padded qualified private or no-cache field names such as private=" authorization" or no-cache="\tauthorization". The parser preserves the surrounding...

Take control of Cache-Control and local caching

TL;DR Caching speeds up website content delivery What caching directives are and how to use them The No-cache directive does not prevent caching The No-store directiveprevents caching Introduction The HTTP Cache-Control header is sometimes misunderstood. It's important because it is used to speci...

SUSE CVE-2009-0358

Mozilla Firefox 3.x before 3.0.6 does not properly implement the 1 no-store and 2 no-cache Cache-Control directives, which allows local users to obtain sensitive information by using the a back button or b history list of the victim's browser, as demonstrated by reading the response page of an...

Firefox directives to not cache pages ignored

Mozilla Firefox 3.x before 3.0.6 does not properly implement the 1 no-store and 2 no-cache Cache-Control directives, which allows local users to obtain sensitive information by using the a back button or b history list of the victim's browser, as demonstrated by reading the response page of an...