VulnerabilityPublished 7 Nov 2024

CVE-2024-43431: moodle · idor in badges allows deletion of arbitrary badges

Affects moodleSource CVE Database V5

Not known to be exploited · CVSS 7.5 High · fixed in 4.4.2 : patch moodle soon.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 3.1 base score

7.5High

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

EPSS: 0.4% chance of exploitation in 30 days – higher than 40% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 4.4.2, 4.3.6, 4.2.9 +1

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: High
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: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
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: None: There is no loss of confidentiality within the impacted component.
Integrity: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to 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 7 Nov 2024
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

Upgrade moodle to 4.4.2, 4.3.6, 4.2.9 or 4.1.12.

Affected software

Product	Affected	Fixed in
moodle	Affected <4.1.12 >=4.2 <4.2.9 >=4.3 <4.3.6 >=4.4 <4.4.2	Fixed in 4.4.2 4.3.6 4.2.9 4.1.12
GitHubmoodle`pkg:github/moodle`Other threats	Affected <4.1.12 >=4.2 <4.2.9 >=4.3 <4.3.6 >=4.4 <4.4.2	Fixed in 4.1.12 4.2.9 4.3.6 4.4.2

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-2024-43431, organizations should first verify their Moodle version and upgrade to a patched release once available from the official Moodle security advisories. In the absence of an immediate patch, administrators should restrict network access to Moodle’s badge management endpoints to trusted users only, using firewall rules or VPNs. Implementing additional application-layer access controls or web application firewalls (WAFs) to monitor and block unauthorized badge deletion requests can provide temporary protection. Regularly auditing badge data and logs for unusual deletion activity can help detect exploitation attempts early. Educating Moodle administrators about this vulnerability and encouraging prompt application of security updates is critical. Finally, organizations should review their badge-related workflows to ensure that critical processes do not rely solely on badge integrity without additional verification mechanisms.

Description

A vulnerability was found in Moodle. Insufficient capability checks made it possible to delete badges that a user does not have permission to access.

Impact

The primary impact of CVE-2024-43431 is on the integrity of badge data within Moodle systems. Unauthorized deletion of badges can disrupt the recognition of user achievements, certifications, or milestones, which may have reputational and operational consequences for educational institutions and organizations relying on Moodle for credential management. Although confidentiality and availability are not directly affected, the loss or manipulation of badge data could undermine trust in the platform and complicate audit and compliance efforts. In environments where badges are linked to access control or progression, this vulnerability could indirectly affect user privileges or workflow. Given the ease of exploitation (no authentication or user interaction required), attackers could automate badge deletion at scale, potentially causing widespread disruption. The absence of known exploits in the wild reduces immediate risk but does not diminish the urgency for remediation, especially in high-stakes educational or corporate training contexts.

CWE-862Missing Authorization (opens in a new tab)
Class weaknessLikelihood of exploit: HighCWE Top 25 (2025): #4OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
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)
Attack patterns
Exploitation of Thunderbolt Protection Flaws (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 28 Feb 2026, 06:27 UTC

WeaknessesCWE-862

Technical details

References

Community reviews

Related threats