Sensitive Cookie with Improper SameSite Attribute Affecting tez package, versions <0.10.5-r29
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CHAINGUARDLATEST-TEZ-19643563
- published8 Sept 2026
- disclosed1 Jul 2026
Introduced: 1 Jul 2026
CVE-2026-55688 (opens in a new tab)How to fix?
Upgrade Chainguard tez to version 0.10.5-r29 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream tez package and not the tez package as distributed by Chainguard.
See How to fix? for Chainguard relevant fixed versions and status.
The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. In versions from 2.0.0 prior to 2.16.0 and from 3.0.0.Beta1 prior to 3.0.11, ThreadSafeCookieStore stored a cookie under the value of its Domain attribute without verifying that the responding host is allowed to set a cookie for that domain, leading to a cookie tossing / cookie injection issue. A host the client connects to can therefore plant a cookie scoped to an unrelated domain, and the client will then send that cookie on later requests to that domain. Applications that use a single AsyncHttpClient instance - and thus the default, shared CookieStore - to reach both an attacker-influenced host and a trusted host are impacted. This issue has been fixed in versions 2.16.0 and 3.0.11.