CVE-2022-35540Network attack vector

Administrator access via hardcoded JWT signing secret

Published Aug 18, 2022 · Updated Aug 3, 2024

Authentication bypass in dotnetcore AgileConfig Server before 1.6.8 allows remote attackers to gain administrator access with forged JWTs. The server's JWT authentication code validates attacker-supplied tokens with a signing secret embedded in the public source, enabling valid administrator claims to be minted. No existing account or user interaction is required, and accepted tokens grant access to administrative functionality.

CVSS severity9.8
Critical
EPSS probability1.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in dotnetcore AgileConfig Server before 1.6.8 allows remote attackers to gain administrator access with forged JWTs. The server's JWT authentication code validates attacker-supplied tokens with a signing secret embedded in the public source, enabling valid administrator claims to be minted. No existing account or user interaction is required, and accepted tokens grant access to administrative functionality.

The record

CVE
CVE-2022-35540
Published
Aug 18, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-798, T1606.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
T1606.001Forge Web Credentials: Web Cookies

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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