CVE-2020-10807Public exploitNetwork attack vector

Unauthenticated REST API access via forged Host header

Published Mar 22, 2020 · Updated Aug 4, 2024

Authentication bypass in MITRE Caldera before 2.6.5 allows remote attackers to read REST API data through a forged HTTP Host header. The auth_svc check_permissions method trusts any request whose mutable Host value contains the configured localhost bypass string. Network access to the REST API is sufficient to retrieve protected Caldera details without an API key or login.

CVSS severity5.3
Medium
EPSS probability1.44%
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 MITRE Caldera before 2.6.5 allows remote attackers to read REST API data through a forged HTTP Host header. The auth_svc check_permissions method trusts any request whose mutable Host value contains the configured localhost bypass string. Network access to the REST API is sufficient to retrieve protected Caldera details without an API key or login.

The record

CVE
CVE-2020-10807
Published
Mar 22, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-290, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 22, 2020CVE 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.0NIST National Vulnerability DatabaseAV:N/AC:L/Au:N/C:P/I:N/A:N
5.3NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-290Authentication Bypass by Spoofing
T1190Exploit Public-Facing Application

Public exploit references

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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