CVE-2025-10211VulnerabilityPublished 10 Sep 2025

CVE-2025-10211: yanyutao0402 ChanCMS · Server-Side Request Forgery

Affects yanyutao0402 ChanCMSSource CVE Database V5

Not known to be exploited · public detection template (Nuclei) · CVSS 5.3 Medium.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 4.0 base score

5.3Medium

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

EPSS: 0.7% chance of exploitation in 30 days – higher than 53% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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: Low
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: Low: The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
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 10 Sep 2025
Detectable: evidence found.
nuclei template: ChanCMS <= 3.3.0 - Server-Side Request Forgery
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 2026-10-26.

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

Affected software

Product	Affected	Fixed in
yanyutao0402 ChanCMS	Affected =3.3.0	Fixed in–

AI-suggested

First, restrict outbound HTTP requests from the ChanCMS server using network-level controls such as firewall rules or proxy configurations to limit the server's ability to reach unauthorized internal or external endpoints. Second, implement strict input validation and sanitization on the 'taskUrl' parameter at the application or web server level, potentially using web application firewalls (WAFs) to detect and block suspicious SSRF payloads. Third, monitor server logs and network traffic for unusual request patterns indicative of SSRF exploitation attempts. Fourth, consider isolating the CMS server within a segmented network zone with minimal access to sensitive internal resources. Finally, plan to upgrade or migrate away from ChanCMS 3.3.0 to a more secure platform or await vendor updates, while maintaining regular backups and incident response readiness. Organizations should also educate their security teams about SSRF risks and detection techniques to improve response capabilities.

Description

A security vulnerability has been detected in yanyutao0402 ChanCMS 3.3.0. The affected element is the function CollectController of the file /cms/collect/getArticle. The manipulation of the argument taskUrl leads to server-side request forgery. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Impact

For European organizations using ChanCMS 3.3.0, this SSRF vulnerability poses a tangible risk to internal network security and data confidentiality. Attackers could leverage the SSRF flaw to probe internal services, access sensitive internal APIs, or exfiltrate data from protected environments. This is particularly concerning for organizations hosting sensitive content or critical infrastructure on ChanCMS, such as government agencies, educational institutions, or enterprises managing confidential data. The vulnerability could also be used as a pivot point for lateral movement within corporate networks, potentially leading to broader compromise. Given the lack of vendor response and patch, European entities relying on this CMS must assume ongoing exposure. The medium CVSS score indicates moderate risk, but the ease of exploitation and public availability of exploits could elevate the threat level in practice. Additionally, SSRF can sometimes be chained with other vulnerabilities to escalate privileges or cause denial of service, amplifying the impact. Organizations with strict data protection requirements under GDPR should be particularly vigilant, as exploitation could lead to data breaches and regulatory penalties.

Summary

CVE-2025-10211 is a Server-Side Request Forgery (SSRF) vulnerability identified in the ChanCMS content management system, specifically version 3.3.0 developed by yanyutao0402. The vulnerability exists in the CollectController function within the /cms/collect/getArticle endpoint. The issue arises from improper validation or sanitization of the 'taskUrl' parameter, which an attacker can manipulate to force the server to make unauthorized HTTP requests to arbitrary URLs. This SSRF flaw allows remote attackers to potentially access internal resources, bypass firewalls, or interact with backend services that are otherwise inaccessible externally. The vulnerability does not require user interaction or authentication, making it remotely exploitable over the network. The vendor was notified but did not respond or provide a patch, and public exploit code has been disclosed, increasing the risk of exploitation. The CVSS 4.0 base score is 5.3 (medium severity), reflecting moderate impact on confidentiality, integrity, and availability with low attack complexity and no privileges required. However, the vulnerability's impact can vary depending on the internal network architecture and the sensitivity of the resources accessible via SSRF.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 10 Sep 2025, 20:30 UTC

Public exploits and detectiona Nuclei detection template

Technical details

References

Community reviews

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