dunglas frankenphp prior 1.12.3 CGI Path Splitting unicode encoding

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability was found in dunglas frankenphp and classified as problematic. This vulnerability affects unknown code of the component CGI Path Splitting. Executing a manipulation can lead to improper handling of unicode encoding. This vulnerability is tracked as CVE-2026-45062. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in dunglas frankenphp. This vulnerability affects an unknown code of the component CGI Path Splitting. The manipulation with an unknown input leads to a improper handling of unicode encoding vulnerability. The CWE definition for the vulnerability is CWE-176. The product does not properly handle when an input contains Unicode encoding. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

FrankenPHP is a modern application server for PHP. From version 1.11.2 to before version 1.12.3, the splitPos() function in cgi.go misuses golang.org/x/text/search with search.IgnoreCase when the request path contains a non-ASCII byte. Two distinct flaws in that fallback let an attacker mislead FrankenPHP into treating a non-.php file as a .php script. In any deployment where the attacker can place content into a file served by FrankenPHP (uploads, file storage, etc.), this can be escalated to remote code execution by crafting a URL whose path triggers either flaw. This issue has been patched in version 1.12.3.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-45062. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

Upgrading to version 1.12.3 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-36075). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.1
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper handling of unicode encoding
CWE: CWE-176 / CWE-172
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: frankenphp 1.12.3

Timelineinfo

05/16/2026 Advisory disclosed
05/16/2026 +0 days VulDB entry created
06/15/2026 +30 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-45062 (🔒)
GCVE (CVE): GCVE-0-2026-45062
GCVE (VulDB): GCVE-100-364312
EUVD: 🔒

Entryinfo

Created: 05/16/2026 06:59
Updated: 06/15/2026 03:34
Changes: 05/16/2026 06:59 (50), 06/11/2026 18:18 (1), 06/15/2026 03:34 (12)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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