http4k before 6.48.0.0 Cookie Scoping Bypass via BasicCookieStorage
Impact
http4k versions before 4.51.0.0, 5.42.0.0, and 6.48.0.0 have a cookie scoping bypass weakness, potentially disclosing sensitive values when a single BasicCookieStorage instance is used for multiple origins. Affected clients may send cookies to unauthorized hosts. Clients using a storage instance for a single origin are not affected.
Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.Affected packages
Affected products
Vendor version evidence. Product records are separate from automatic dependency matching.
http4k · VulnCheck
http4k
2 ranges
http4k · VulnCheck
http4k
Package identity
pkg:maven/org.http4k/http4k-coreExplore org.http4k:http4k-core →Identity supplied by VulnCheck. Version matching requires compatible range evidence.
Compare with this publisher’s ranges. This does not inspect your installation.
affected
6.0.0.0 → before 6.48.0.0
custom versions
unaffected
6.48.0.0
custom versions
Other versions: unaffected
http4k · VulnCheck
http4k
2 ranges
http4k · VulnCheck
http4k
Package identity
pkg:maven/org.http4k/http4k-coreExplore org.http4k:http4k-core →Identity supplied by VulnCheck. Version matching requires compatible range evidence.
Compare with this publisher’s ranges. This does not inspect your installation.
affected
5.0.0.0 → before 5.42.0.0
custom versions
unaffected
5.42.0.0
custom versions
Other versions: unaffected
http4k · VulnCheck
http4k
2 ranges
http4k · VulnCheck
http4k
Package identity
pkg:maven/org.http4k/http4k-coreExplore org.http4k:http4k-core →Identity supplied by VulnCheck. Version matching requires compatible range evidence.
Compare with this publisher’s ranges. This does not inspect your installation.
affected
0 → before 4.51.0.0
custom versions
unaffected
4.51.0.0
custom versions
Other versions: unaffected
Original source description
http4k (Maven artifact org.http4k:http4k-core) before 6.48.0.0, 5.42.0.0, and 4.51.0.0 ships a BasicCookieStorage (client-side cookie store used by ClientFilters.Cookies) that does not enforce RFC 6265 scoping rules for the cookie domain, path, and Secure attributes. When a single BasicCookieStorage instance is used to talk to more than one origin or scheme, cookies stored for one origin can be sent to other origins, and cookies marked Secure can be sent over plain HTTP, potentially disclosing session cookies or other sensitive values to unauthorized hosts or network observers. Clients that use a storage instance for a single origin are not affected.
Inside the record
Evidence available
Describes the evidence in this view, not whether the product is safe.
Original records
CVE-2026-100725View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.
cve.new JSON →Underlying weaknesses
The source’s classification of what caused the vulnerability.
Contributing organizations · 2
Assigning organization
Additional data publisher
What changed
Follow changesLarge field values are marked as truncated previews. Original source snapshots remain retained.