CVE-2026-24853Public exploitNetwork attack vectorHinoki check available

Unauthenticated code execution via forwarded-host spoofing

Published Feb 13, 2026 · Updated Feb 13, 2026

Authentication bypass in Caido before 0.55.0 allows remote attackers to execute code by spoofing a forwarded host header. Caido's domain allowlist trusts the attacker-supplied X-Forwarded-Host value 127.0.0.1:8080, bypassing its non-whitelisted-host block. Guest Mode must be enabled; browser popup permission is required for the documented path except in headless mode, and successful exploitation runs code on the host.

CVSS severity8.1
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Authentication bypass in Caido before 0.55.0 allows remote attackers to execute code by spoofing a forwarded host header. Caido's domain allowlist trusts the attacker-supplied X-Forwarded-Host value 127.0.0.1:8080, bypassing its non-whitelisted-host block. Guest Mode must be enabled; browser popup permission is required for the documented path except in headless mode, and successful exploitation runs code on the host.

The record

CVE
CVE-2026-24853
Published
Feb 13, 2026
Updated
Feb 13, 2026
Vendor
Caido
Product
Caido
Classifications
CWE-290, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.55.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Caido · Caidoversion=< 0.55.0

Published CVSS scores

8.1GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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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