CVE-2025-1293

Authentication bypass via unverified ALB JWT signer

Published Feb 20, 2025 · Updated Feb 20, 2025

Weak authentication in HashiCorp Hermes before 0.5.0 allows remote attackers to bypass authentication via a crafted AWS ALB JWT. The Okta ALB verifier trusted the JWT kid-selected AWS regional key without confirming that its signer claim matched the configured load balancer. Exploitation requires direct network access to the Hermes application server and permits access as the forged identity.

CVSS severity8.2
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Weak authentication in HashiCorp Hermes before 0.5.0 allows remote attackers to bypass authentication via a crafted AWS ALB JWT. The Okta ALB verifier trusted the JWT kid-selected AWS regional key without confirming that its signer claim matched the configured load balancer. Exploitation requires direct network access to the Hermes application server and permits access as the forged identity.

The record

CVE
CVE-2025-1293
Published
Feb 20, 2025
Updated
Feb 20, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1390, CAPEC-115
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 20, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.2NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
8.2HashiCorpCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1390Weak Authentication
CAPEC-115Authentication Bypass

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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