TI-2025-01107 Aliases CVE-2025-1293 GHSA-vxm9-8mfw-vc6g

HashiCorp Hermes Improperly Validates AWS ALB JWTs, which May Lead to Authentication Bypass

LOW 36CWE-1390Published 2025-02-20 · Updated 2025-02-20

Key facts

Attack vector: Adjacent network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

Hermes versions up to 0.4.0 improperly validated the JWT provided when using the AWS ALB authentication mode, potentially allowing for authentication bypass. This vulnerability, CVE-2025-1293, was fixed in Hermes 0.5.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00348 28th percentileScored 2026-11-07

Fix Fixed Tooling (HashiCorp): 0.5.0github.com/hashicorp-forge/hermes (Go): 0.5.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
HashiCorp	Tooling	before 0.5.0	0.5.0	Patch available	CNA
—	github.com/hashicorp-forge/hermes (Go)	before 0.5.0	0.5.0	Patch available	GHSA-vxm9-8mfw-vc6g

Tooling VendorHashiCorp Affected before 0.5.0 Fixed in 0.5.0 Patch available CNA
github.com/hashicorp-forge/hermes (Go) Vendor— Affected before 0.5.0 Fixed in 0.5.0 Patch available GHSA-vxm9-8mfw-vc6g

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:hashicorp:hermes::::::::	before 0.5.0	Vulnerable	HashiCorp

cpe:2.3:a:hashicorp:hermes:*:*:*:*:*:*:*:* Versions before 0.5.0 Vulnerable ·HashiCorp

Remediation

Fix · CNA Tooling (HashiCorp) Fixed in 0.5.0
Fix · GHSA-vxm9-8mfw-vc6g github.com/hashicorp-forge/hermes (Go) Fixed in 0.5.0 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2025-1293
2026-10-03 Alias added: GHSA-vxm9-8mfw-vc6g

References

Advisory 2

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences