CVE-2026-57743Network attack vector

Unauthenticated local server file disclosure

Published Jul 13, 2026 · Updated Jul 13, 2026

Local file inclusion in RT-Themes RT-Theme 18 Extensions 2.5 and earlier allows remote attackers to read local server files. Patchstack and the CNA do not identify the affected endpoint, parameter, or PHP include/require statement, so the precise untrusted-filename flow is undisclosed. No authentication or user interaction is required, but exploitation has high complexity; disclosed impact is limited to including local server files and returning their output.

CVSS severity8.1
High
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Local file inclusion in RT-Themes RT-Theme 18 Extensions 2.5 and earlier allows remote attackers to read local server files. Patchstack and the CNA do not identify the affected endpoint, parameter, or PHP include/require statement, so the precise untrusted-filename flow is undisclosed. No authentication or user interaction is required, but exploitation has high complexity; disclosed impact is limited to including local server files and returning their output.

The record

CVE
CVE-2026-57743
Published
Jul 13, 2026
Updated
Jul 13, 2026
Vendor
RT-Themes
Product
RT-Theme 18 Extensions
Classifications
CWE-98, CAPEC-252, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 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 <=2.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

RT-Themes · RT-Theme 18 Extensionsversion=0 <=2.5

Published CVSS scores

8.1PatchstackCVSS: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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-98Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')
CAPEC-252PHP Local File Inclusion
T1005Data from Local System

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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