CVE-2025-8226VulnerabilityPublished 27 Jul 2025Updated 28 Jul 2025

CVE-2025-8226: yanyutao0402 ChanCMS · Information Disclosure

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 25 Oct 2026, 19:02 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 50% 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:L/VI:N/VA:N/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: None
Vulnerable system availability: None
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: None: There is no loss of integrity within the Vulnerable System.
Vulnerable system availability: None: There is no impact to availability within 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 27 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 2026-10-25.

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

Organizations should immediately verify their ChanCMS version and upgrade to version 3.1.3 or later, where the vulnerability is patched. Beyond upgrading, it is advisable to audit access controls around the /sysApp/find endpoint to restrict access to trusted IP addresses or authenticated users only. Implementing web application firewalls (WAFs) with custom rules to detect and block suspicious requests manipulating accessKey or secretKey parameters can provide additional protection. Regularly monitoring logs for unusual access patterns to the affected endpoint can help detect exploitation attempts early. If upgrading is temporarily not feasible, consider disabling or restricting the vulnerable functionality until a patch can be applied. Finally, review and rotate any potentially exposed credentials or keys to mitigate risks from prior information disclosure.

Description

A vulnerability was found in yanyutao0402 ChanCMS up to 3.1.2. It has been classified as problematic. Affected is an unknown function of the file /sysApp/find. The manipulation of the argument accessKey/secretKey leads to information disclosure. It is possible to launch the attack 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. It is recommended to upgrade the affected component.

Impact

For European organizations using ChanCMS versions 3.1.0 through 3.1.2, this vulnerability poses a risk of unauthorized disclosure of sensitive information, potentially including credentials or configuration data tied to accessKey and secretKey parameters. Such information leakage could facilitate further attacks such as privilege escalation, unauthorized access, or lateral movement within affected systems. The medium severity rating reflects that while the confidentiality impact is low, the ease of remote exploitation without user interaction or high privileges increases the threat. European organizations relying on ChanCMS for content management, especially those handling sensitive or regulated data, may face compliance risks if sensitive information is exposed. Additionally, attackers could leverage disclosed information to target critical infrastructure or business processes, impacting operational security.

Summary

CVE-2025-8226 is an information disclosure vulnerability affecting yanyutao0402's ChanCMS versions up to 3.1.2. The vulnerability resides in an unspecified function within the /sysApp/find file, where improper handling of the accessKey and secretKey parameters allows an attacker to remotely extract sensitive information. The vulnerability does not require user interaction and can be exploited over the network without authentication, making it accessible to remote attackers. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:L, meaning low privileges are needed), no user interaction (UI:N), and low impact on confidentiality (VC:L) with no impact on integrity or availability. The exploit has been publicly disclosed, increasing the risk of exploitation, although no active exploits in the wild have been reported yet. The vendor has addressed the issue in ChanCMS version 3.1.3, and upgrading to this version or later is recommended to remediate the vulnerability.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 4 Aug 2025, 00:59 UTC

Technical details

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