CVE-2021-42135Network attack vector

Credential issuance via overbroad glob policy matching

Published Oct 11, 2021 · Updated Aug 4, 2024

Incorrect authorization in HashiCorp Vault and Vault Enterprise 1.8.0 through 1.8.4 allows remote authenticated users to issue GCP credentials. Roleset-specific endpoints introduced under /gcp/roleset/ fall within a terminal glob policy, so read access to /gcp/roleset/* also matches credential-issuing operations. The behavior requires the Google Cloud secrets engine and a permissive glob-based policy, and it grants Google Cloud service account credentials beyond the intended Vault permissions.

CVSS severity8.1
High
EPSS probability0.78%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in HashiCorp Vault and Vault Enterprise 1.8.0 through 1.8.4 allows remote authenticated users to issue GCP credentials. Roleset-specific endpoints introduced under /gcp/roleset/ fall within a terminal glob policy, so read access to /gcp/roleset/* also matches credential-issuing operations. The behavior requires the Google Cloud secrets engine and a permissive glob-based policy, and it grants Google Cloud service account credentials beyond the intended Vault permissions.

The record

CVE
CVE-2021-42135
Published
Oct 11, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-863, T1078.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 11, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record 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 vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.1GitLab Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1078.004Valid Accounts: Cloud Accounts

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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