CVE-2025-1113Public exploitNetwork attack vector

Authenticated code execution via crafted theme YAML

Published Feb 7, 2025 · Updated Feb 7, 2025

Unsafe YAML deserialization in Taisan AI Tarzan CMS 1.0 allows remote authenticated users to execute code through a theme upload. The Add Theme handler accepts an unrestricted ZIP and deserializes its theme.yaml file as trusted content, allowing a crafted YAML payload to trigger execution. Low-privileged access to the theme-management interface is required, and successful exploitation runs code in the CMS server process.

CVSS severity5.3
Medium
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unsafe YAML deserialization in Taisan AI Tarzan CMS 1.0 allows remote authenticated users to execute code through a theme upload. The Add Theme handler accepts an unrestricted ZIP and deserializes its theme.yaml file as trusted content, allowing a crafted YAML payload to trigger execution. Low-privileged access to the theme-management interface is required, and successful exploitation runs code in the CMS server process.

The record

CVE
CVE-2025-1113
Published
Feb 7, 2025
Updated
Feb 7, 2025
Vendor
Taisan AI
Product
Tarzan CMS
Classifications
CWE-502, CWE-20, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 7, 2025Record 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=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Taisan AI · Tarzan CMSversion=1.0

Published CVSS scores

6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
5.3VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
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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