CVE-2025-8132VulnerabilityPublished 25 Jul 2025

CVE-2025-8132: yanyutao0402 ChanCMS · Path Traversal

Affects yanyutao0402 ChanCMSSource CVE Database V5

Not known to be exploited · CVSS 5.3 Medium · fixed in 3.1.3 : update yanyutao0402 ChanCMS when convenient.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 4.0 base score

5.3Medium

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

EPSS: 0.6% chance of exploitation in 30 days – higher than 49% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 3.1.3

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/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: None
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: None: There is no loss of confidentiality within 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 25 Jul 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

Affected software

Product	Affected	Fixed in
GitHubyanyutao0402/ChanCMS`pkg:github/yanyutao0402/ChanCMS`Other threats	Affected =3.1.0 =3.1.1 =3.1.2	Fixed in–

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AI-suggested

1. Immediate upgrade of ChanCMS installations to version 3.1.3 or later, which contains the official patch for CVE-2025-8132. 2. Implement strict input validation and sanitization on file path parameters within the CMS to prevent path traversal attempts. 3. Restrict file system permissions for the web server user to the minimum necessary, preventing access to sensitive directories outside the CMS root. 4. Employ web application firewalls (WAFs) with rules designed to detect and block path traversal patterns targeting the delfile function or similar endpoints. 5. Conduct regular security audits and code reviews focusing on file handling functions to identify and remediate similar vulnerabilities proactively. 6. Monitor logs for suspicious file access or deletion attempts, especially those involving unusual path patterns. 7. Educate system administrators and developers about secure coding practices related to file operations to prevent recurrence.

Description

A vulnerability was found in yanyutao0402 ChanCMS up to 3.1.2. It has been rated as critical. Affected by this issue is the function delfile of the file app/extend/utils.js. The manipulation leads to path traversal. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 3.1.3 is able to address this issue. The name of the patch is c8a282bf02a62b59ec60b4699e91c51aff2ee9cd. It is recommended to upgrade the affected component.

Impact

For European organizations using ChanCMS, this vulnerability poses a risk of unauthorized file access or deletion, potentially leading to data breaches, service disruption, or defacement of websites managed by the CMS. Given that ChanCMS is a content management system, exploitation could result in exposure of sensitive content, configuration files, or user data, impacting confidentiality. Integrity could be compromised if attackers delete or modify files, affecting website functionality or trustworthiness. Availability impacts may arise from deletion of critical files causing downtime. Although the CVSS score is medium, the ease of remote exploitation without user interaction increases the risk profile. Organizations in sectors such as government, media, education, and e-commerce that rely on ChanCMS for web content management could face reputational damage and regulatory consequences under GDPR if personal data is exposed. The public disclosure of the vulnerability increases the likelihood of attempted exploitation, emphasizing the need for timely patching.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 25 Jul 2025, 05:32 UTC

Technical details

References

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