CVE-2026-95663: Insufficient Session Expiration vulnerability in Apache Camel Keycloak component. This issue affects Apache Camel: from 4.16.0 before 4.18.5, from 4.19.0…

medium4.8CVSS 3.1

AVNACHPRNUINSUCLILAN

EPSS

0.24%

15.5th percentile

Insufficient Session Expiration vulnerability in Apache Camel Keycloak component. This issue affects Apache Camel: from 4.16.0 before 4.18.5, from 4.19.0 before 4.22.2. When token introspection is enabled on the camel-keycloak KeycloakSecurityPolicy (useTokenIntrospection=true), the security processor validates the access token of a request by sending it to Keycloak's OAuth 2.0 token introspection endpoint, and accepts the token while the response reports it as active. The introspection endpoint reports a token as inactive once its exp (expiration) time has passed, so on this path the active flag is what enforces token expiry. Introspection results are cached by default (introspectionCacheEnabled=true, introspectionCacheTtl=60 seconds), and both cache implementations shipped with the component, ConcurrentMapTokenCache and CaffeineTokenCache, expired an entry a fixed time after it was inserted, without bounding that lifetime by the exp claim that the cached response already carried. KeycloakSecurityProcessor in turn checked only the active flag of the result, on every path that uses introspection, and never compared exp with the current time. A response cached shortly before the token expired was therefore served to later requests carrying the same token for up to the configured time-to-live after the token's expiry, and those requests were admitted with the roles and permissions the expired token had carried, although RFC 7662, which defines token introspection, states that a response containing exp must not be cached beyond that time. The access token is supplied by the caller with each request, typically as a bearer token in the Authorization header, so a caller holding a token that was valid moments earlier could keep using it after it expired, for as long as the cached entry lived. The window is bounded by introspectionCacheTtl, which is 60 seconds by default and 300 to 600 seconds where the documentation's recommendation for internal services was followed,

Affected

2 ranges

Vendor	Product	Version range	Fixed in
apache_software_foundation	apache_camel	>= 4.16.0 < 4.18.5	4.18.5
apache_software_foundation	apache_camel	>= 4.19.0 < 4.22.2	4.22.2

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.