CVE-2026-57744Network attack vector

Unauthenticated object injection via unsafe deserialization

Published Jul 13, 2026 · Updated Jul 13, 2026

Deserialization of untrusted data in RT-Themes RT-Theme 18 Extensions 2.5 and earlier allows remote attackers to inject PHP objects. Patchstack does not disclose the affected function, input parameter, or code path; the public record states only that the plugin deserializes untrusted data. No authentication or user interaction is required, but further effects such as code execution depend on a suitable POP chain in the WordPress installation.

CVSS severity9.8
Critical
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

Deserialization of untrusted data in RT-Themes RT-Theme 18 Extensions 2.5 and earlier allows remote attackers to inject PHP objects. Patchstack does not disclose the affected function, input parameter, or code path; the public record states only that the plugin deserializes untrusted data. No authentication or user interaction is required, but further effects such as code execution depend on a suitable POP chain in the WordPress installation.

The record

CVE
CVE-2026-57744
Published
Jul 13, 2026
Updated
Jul 13, 2026
Vendor
RT-Themes
Product
RT-Theme 18 Extensions
Classifications
CWE-502, T1190
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

9.8PatchstackCVSS: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.

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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-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

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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