CVE-2026-19194
CAP JWT claims validation bypass using non-canonical claim names
The HashiCorp cap JWT validation library before version 0.14.0 is vulnerable to a claims validation bypass that may cause downstream applications to make authorization decisions using claim values different from those validated. Exploitation requires attacker-controlled claims in a JWT signed by a key trusted by the application. This vulnerability (CVE-2026-19194) is fixed in cap 0.14.0.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| Shared library HashiCorp Platforms: 64 bit, 32 bit, x86, ARM, MacOS, Windows, Linux |
≥ 0; < 0.14.0 (affected, semver)
Other versions: unaffected |
CNA: HashiCorp |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 5.9 medium |
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N | CNA: HashiCorp |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
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