CVE-2025-67856VulnerabilityPublished 3 Feb 2026Updated 26 Feb 2026

CVE-2025-67856: moodle · CWE-863

Affects moodleSource CVE Database V5

Not known to be exploited · CVSS 5.4 Critical · fixed in 5.1.1 : patch moodle as a priority.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score

5.4Critical

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

EPSS: 0.3% chance of exploitation in 30 days – higher than 23% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 5.1.1, 5.0.4, 4.5.8 +2

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: Low
Availability: None

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

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, 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: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
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 impacted component.
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 on the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 3 Feb 2026
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

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
Packagistmoodle/moodle`pkg:composer/moodle/moodle`Other threats	Affected =4.1.0 =4.4.0 =4.5.0 =5.0.0 =5.1.0	Fixed in–
GitHubmoodle`pkg:github/moodle`Other threats	Affected >=4.1.0 <4.1.22 >=4.4.0 <4.4.12 >=4.5.0 <4.5.8 >=5.0.0 <5.0.4 >=5.1.0 <5.1.1	Fixed in 4.1.22 4.4.12 4.5.8 5.0.4 5.1.1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

To mitigate CVE-2025-67856, organizations should first verify if they are running affected Moodle versions (4.1.0, 4.4.0, 4.5.0, 5.0.0, 5.1.0) and prioritize upgrading to patched versions once available. In the absence of an official patch, administrators should audit badge awarding workflows and implement strict role verification manually, ensuring that only authorized roles can grant badges. Restrict badge management permissions to trusted administrators and monitor badge issuance logs for anomalies. Employ multi-factor authentication (MFA) to reduce the risk of compromised accounts being used to exploit this flaw. Additionally, conduct regular access reviews to limit privileges to the minimum necessary. Network segmentation and application-layer firewalls can help restrict access to Moodle administrative interfaces. Finally, maintain comprehensive monitoring and alerting on suspicious badge-related activities to detect potential exploitation attempts early.

Description

A flaw was found in Moodle. An authorization logic flaw, specifically due to incomplete role checks during the badge awarding process, allowed badges to be granted without proper verification. This could enable unauthorized users to obtain badges they are not entitled to, potentially leading to privilege escalation or unauthorized access to certain features.

Impact

The primary impact of CVE-2025-67856 is unauthorized privilege escalation within Moodle environments. Attackers exploiting this flaw can gain badges without proper authorization, potentially unlocking restricted features or administrative capabilities. This can lead to unauthorized access to sensitive educational content, manipulation of course progress, or alteration of user roles. For organizations, this undermines the integrity of the learning management system, risks exposure of confidential student or staff information, and may disrupt educational workflows. The flaw does not directly affect system availability but compromises confidentiality and integrity, which can erode trust in the platform. Institutions relying on Moodle for compliance or accreditation may face reputational damage or regulatory scrutiny if exploited. The medium severity score reflects a moderate risk, but the widespread deployment of Moodle in schools, universities, and corporate training globally amplifies the potential impact. Attackers with low-level access can exploit this without user interaction, increasing the likelihood of internal threat actors or compromised accounts abusing the vulnerability.

CWE-863Incorrect Authorization (opens in a new tab)
Class weaknessLikelihood of exploit: HighCWE Top 25 (2025): #17OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
Architecture and Design
Divide the product into anonymous, normal, privileged, and administrative areas. Reduce the attack surface by carefully mapping roles with data and functionality. Use role-based access control (RBAC) to enforce the roles at the appropriate boundaries.
Architecture and Design
Ensure that access control checks are performed related to the business logic. These checks may be different than the access control checks that are applied to more generic resources such as files, connections, processes, memory, and database records.
Architecture and Design · Libraries or Frameworks
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
OWASP Cheat Sheets
Authorization (opens in a new tab)
OWASP ASVS 4.0.3
V8.3.8 (opens in a new tab)
V13.4.2 (opens in a new tab)
V7.2.2 (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

Loading reviews…

Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Feb 2026, 23:12 UTC

WeaknessesCWE-863

Technical details

References

Community reviews

Related threats