CVE-2025-53021

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Source
https://cve.org/CVERecord?id=CVE-2025-53021
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-53021.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-53021
Aliases
Downstream
Published
2025-06-24T00:00:00Z
Modified
2026-08-12T03:51:19Z
Severity
  • 4.2 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N CVSS Calculator
Summary
[none]
Details

A session fixation vulnerability in Moodle 3.x through 3.11.18 allows unauthenticated attackers to hijack user sessions via the sesskey parameter. The sesskey can be obtained without authentication and reused within the OAuth2 login flow, resulting in the victim's session being linked to the attacker's. Successful exploitation results in full account takeover. According to the Moodle Releases page, "Bug fixes for security issues in 3.11.x ended 11 December 2023." NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

Database specific 
{
    "cna_assigner": "mitre",
    "cwe_ids": [
        "CWE-384"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/53xxx/CVE-2025-53021.json"
}
References

Affected packages

Git / github.com/moodle/moodle

Affected ranges

Type
GIT
Repo
https://github.com/moodle/moodle
Events
Introduced
6114fab93b414fcfa107d5a8fa2b35bc99d3464e
Fixed
375a1163378f4fd5af36aa633c08c0431c9ad74b
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "3.0.0"
        },
        {
            "last_affected": "3.11.18"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

v3.*
v3.0.0
v3.1.0
v3.1.0-beta
v3.1.0-rc1
v3.1.0-rc2
v3.10.0
v3.10.0-beta
v3.10.0-rc1
v3.10.0-rc2
v3.11.0
v3.11.0-beta
v3.11.0-rc1
v3.11.0-rc2
v3.11.1
v3.11.10
v3.11.11
v3.11.12
v3.11.13
v3.11.14
v3.11.15
v3.11.16
v3.11.17
v3.11.2
v3.11.3
v3.11.4
v3.11.5
v3.11.6
v3.11.7
v3.11.8
v3.11.9
v3.2.0
v3.2.0-beta
v3.2.0-rc1
v3.2.0-rc2
v3.2.0-rc3
v3.2.0-rc4
v3.2.0-rc5
v3.3.0
v3.3.0-beta
v3.3.0-rc1
v3.3.0-rc2
v3.3.0-rc3
v3.4.0
v3.4.0-beta
v3.4.0-rc1
v3.4.0-rc2
v3.4.0-rc3
v3.5.0
v3.5.0-beta
v3.5.0-rc1
v3.6.0
v3.6.0-beta
v3.6.0-rc1
v3.6.0-rc2
v3.6.0-rc3
v3.7.0
v3.7.0-beta
v3.7.0-rc1
v3.7.0-rc2
v3.8.0
v3.8.0-beta
v3.8.0-rc1
v3.9.0
v3.9.0-beta
v3.9.0-rc1
v3.9.0-rc2
v3.9.0-rc3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-53021.json"