VulnerabilityPublished 30 Nov 2025Updated 1 Dec 2025

CVE-2025-13786: taosir WTCMS · Code Injection

Affects taosir WTCMSSource CVE Database V5

Not known to be exploited · CVSS 6.9 Medium.

Data as of 26 Oct 2026, 09:08 UTC

CVSS 4.0 base score

6.9Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.5% chance of exploitation in 30 days – higher than 46% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Base metrics

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: None
User Interaction: None
Vulnerable system confidentiality: Low
Vulnerable system integrity: Low
Vulnerable system availability: Low
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Threat metrics

Exploit Maturity: POC

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the Vulnerable System.
Vulnerable system integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact to the Vulnerable System.
Vulnerable system availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the Vulnerable System are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.
Exploit Maturity: POC: Based on threat intelligence sources each of the following must apply: · Proof-of-concept is publicly available · No knowledge of reported attempts to exploit this vulnerability · No knowledge of publicly available solutions used to simplify attempts to exploit the vulnerability

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 30 Nov 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

AI-suggested

1. Immediately audit all taosir WTCMS deployments to identify affected versions, focusing on the commit 01a5f68a3dfc2fdddb44eed967bb2d4f60487665 or earlier. 2. Implement strict input validation and sanitization on the 'content' parameter at the web application firewall (WAF) or reverse proxy level to block suspicious payloads. 3. Employ network segmentation and restrict external access to WTCMS administrative interfaces and backend systems. 4. Monitor web server logs and network traffic for unusual requests targeting /index.php with anomalous 'content' parameters. 5. Consider deploying runtime application self-protection (RASP) tools to detect and block code injection attempts in real time. 6. If feasible, isolate WTCMS instances in hardened containers or virtual machines to limit blast radius. 7. Engage with the taosir community or security researchers to track any forthcoming patches or mitigations. 8. Prepare incident response plans specifically addressing potential exploitation scenarios of this vulnerability. 9. Educate IT and security teams about the vulnerability and the importance of rapid detection and containment. 10. Explore alternative CMS platforms if vendor support remains absent and risk is unacceptable.

Description

A vulnerability was detected in taosir WTCMS up to 01a5f68a3dfc2fdddb44eed967bb2d4f60487665. Impacted is the function fetch of the file /index.php. Performing manipulation of the argument content results in code injection. It is possible to initiate the attack remotely. The exploit is now public and may be used. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available. The vendor was contacted early about this disclosure but did not respond in any way.

Impact

For European organizations, exploitation of this vulnerability could lead to unauthorized remote code execution on web servers running taosir WTCMS, potentially resulting in data breaches, defacement, or full system takeover. This can compromise the confidentiality, integrity, and availability of critical web services and backend systems. Organizations in sectors such as government, finance, healthcare, and media that use WTCMS may face operational disruptions and reputational damage. The lack of vendor response and patches increases the window of exposure. Attackers could leverage this vulnerability to establish persistent access, move laterally within networks, or deploy ransomware. Given the public availability of exploit code, the threat landscape may rapidly escalate, especially targeting less-secured or unmonitored deployments. European entities with compliance obligations under GDPR may also face regulatory penalties if breaches occur due to unpatched vulnerabilities.

References

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Exploitation evidence

What to do

Description

AI analysisMachine-generated, updated 7 Dec 2025, 09:34 UTC

Technical details

References

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