GHSA-vxm9-8mfw-vc6g — high GitHub Advisory (CVE-2025-1293) in go/github.com/hashicorp-forge/hermes

Description

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.

Basic information

Type: reviewed
Severity: high
Advisory on GitHub: Open advisory ↗
Repository advisory: —
Source code: Browse source ↗
Published (advisory): 2025-02-20 03:32:03 UTC
Updated: 2025-02-20 20:19:02 UTC
GitHub reviewed: 2025-02-20 20:19:01 UTC
NVD published: 2025-02-19

Score	Percentile
0.07%	20.98%

CVSS Scores

Base score	Version	Severity	Vector
8.2	3.1	—	`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N` Click to expand Attack vector (AV:A) Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:C) Breaking this can reach past the original component and bite other resources—bigger blast radius. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:L) Attackers could change some data, but it’s limited—not everything goes. Availability (A:N) Service keeps running; no real outage angle.

Identifiers

Type	Value
GHSA	GHSA-vxm9-8mfw-vc6g ↗
CVE	CVE-2025-1293 ↗

CWEs

CWE id	Name
CWE-1390	Weak Authentication

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem	Package	Vulnerable range	First patched	Vulnerable functions
go	github.com/hashicorp-forge/hermes	< 0.5.0	0.5.0	—

Hermes improperly validates a JWT