CVE-2026-45062Public exploitNetwork attack vector

Remote code execution via Unicode path confusion

Published Jun 10, 2026 · Updated Jun 10, 2026

Unicode path confusion in The PHP Group's FrankenPHP 1.11.2 through 1.12.2 allows remote attackers to execute files as PHP via crafted URLs. On non-ASCII request paths, cgi.go's splitPos() retains a stale match flag or applies broad Unicode equivalence through search.IgnoreCase, falsely locating an ASCII .php suffix. Exploitation requires attacker-controlled file content and a matching filename on the served filesystem; one unauthenticated request then runs that content in the server process.

CVSS severity8.1
High
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unicode path confusion in The PHP Group's FrankenPHP 1.11.2 through 1.12.2 allows remote attackers to execute files as PHP via crafted URLs. On non-ASCII request paths, cgi.go's splitPos() retains a stale match flag or applies broad Unicode equivalence through search.IgnoreCase, falsely locating an ASCII .php suffix. Exploitation requires attacker-controlled file content and a matching filename on the served filesystem; one unauthenticated request then runs that content in the server process.

The record

CVE
CVE-2026-45062
Published
Jun 10, 2026
Updated
Jun 10, 2026
Vendor
The PHP Group
Product
FrankenPHP
Classifications
CWE-178, CWE-176, CWE-20, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 10, 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=>= 1.11.2, < 1.12.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The PHP Group · FrankenPHPversion=>= 1.11.2, < 1.12.3

Published CVSS scores

8.1GitHubCVSS:3.1/AV:N/AC:H/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 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-178Improper Handling of Case Sensitivity
CWE-176Improper Handling of Unicode Encoding
CWE-20Improper Input Validation
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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