CVE-2025-67852VulnerabilityPublished 3 Feb 2026

CVE-2025-67852: moodle · Open Redirect

Affects moodleSource CVE Database V5

Not known to be exploited · CVSS 3.5 Medium · fixed in 5.1.1 : update moodle when convenient.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score

3.5Medium

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

EPSS: 0.2% chance of exploitation in 30 days – higher than 17% 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:R/S:U/C:L/I:N/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: Required
Scope: Unchanged
Confidentiality: Low
Integrity: None
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: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
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: None: There is no loss of integrity within 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-2025-67852, organizations should immediately upgrade Moodle installations to patched versions once available. In the interim, administrators can implement strict validation of redirect URLs in the OAuth login flow, ensuring only whitelisted or internal URLs are accepted. Employing Content Security Policy (CSP) headers can help restrict navigation to trusted domains. User education on phishing risks and cautious handling of login links is critical. Monitoring logs for unusual redirect patterns or login anomalies can aid early detection of exploitation attempts. Additionally, implementing multi-factor authentication (MFA) reduces the risk of credential compromise even if phishing occurs. Security teams should review OAuth configurations and consider disabling or restricting OAuth login flows if not essential. Regular vulnerability scanning and penetration testing focused on authentication flows can help identify similar issues proactively.

Description

A flaw was found in Moodle. An open redirect vulnerability in the OAuth login flow allows a remote attacker to redirect users to attacker-controlled pages after they have successfully authenticated. This occurs due to insufficient validation of redirect parameters, which could lead to phishing attacks or information disclosure.

Impact

The primary impact of CVE-2025-67852 is the facilitation of phishing attacks by redirecting authenticated Moodle users to malicious external sites. This can lead to credential theft, session hijacking, or exposure to malware if users are tricked into interacting with attacker-controlled pages. Although the vulnerability does not directly compromise system integrity or availability, the indirect consequences can be significant, especially in educational environments where sensitive student and faculty data is involved. Organizations relying on affected Moodle versions risk reputational damage and potential data breaches if users fall victim to phishing campaigns leveraging this flaw. The requirement for user interaction and some privilege limits the ease of exploitation but does not eliminate risk, particularly in large user bases where targeted phishing can be effective. The lack of known exploits reduces immediate threat but vigilance is necessary. Overall, the vulnerability poses a moderate threat to confidentiality and user trust within affected organizations worldwide.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 27 Feb 2026, 15:52 UTC

Technical details

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