CVE-2026-102586

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Source
https://cve.org/CVERecord?id=CVE-2026-102586
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102586.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-102586
Downstream
Published
2026-09-30T08:36:19Z
Modified
2026-10-03T03:46:16Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N CVSS Calculator
Summary
Moodle: xss via password reset link due to insufficient username escaping
Details

A flaw was found in Moodle. Insufficient sanitization of username input on the password reset page allows a remote attacker to conduct a cross-site scripting (XSS) attack. By convincing an unauthenticated user to access a specially crafted password reset link, an attacker could execute arbitrary script in the victim's browser.

Database specific 
{
    "cna_assigner":  "fedora",
    "cwe_ids":  [
        "CWE-79"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102586.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "introduced":  "5.2.0"
                },
                {
                    "fixed":  "5.2.2"
                },
                {
                    "introduced":  "5.1.0"
                },
                {
                    "fixed":  "5.1.6"
                },
                {
                    "introduced":  "5.0.0"
                },
                {
                    "fixed":  "5.0.9"
                },
                {
                    "fixed":  "4.5.13"
                }
            ],
            "source":  "AFFECTED_FIELD"
        }
    ]
}
References

Affected packages

Git / github.com/moodle/moodle

Affected ranges

Type
GIT
Repo
https://github.com/moodle/moodle
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
8cbae18a2898cfd8266ec91ac206e12004f0ff5f
Introduced
78e860178314c45441a21e0b99455400b8283d48
Fixed
152bf2ebbdd1f994331af21c80332b8d9051581c
Introduced
eb47eff0719455a7e1f7a9805bc75dad3f6b3995
Fixed
17513f6614237b530de7903fe32117fa026384c2
Introduced
c197f31fd89bf5dd5ba41661b06660167e419099
Fixed
acfa383c13dd46c83ca82894a8e95fac273fda33
Database specific
Show details 
{
    "cpe":  "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "4.5.13"
        },
        {
            "introduced":  "5.0.0"
        },
        {
            "fixed":  "5.0.9"
        },
        {
            "introduced":  "5.1.0"
        },
        {
            "fixed":  "5.1.6"
        },
        {
            "introduced":  "5.2.0"
        },
        {
            "fixed":  "5.2.2"
        }
    ],
    "source":  "CPE_RANGE"
}

Affected versions

v1.*
v1.0.0
v1.0.1
v1.0.2
v1.0.3
v1.0.4
v1.0.5
v1.0.6
v1.0.7
v1.0.8
v1.0.9
v1.1.0
v1.1.1
v1.2.0
v1.2.1
v1.3.0
v2.*
v2.0.0
v2.0.0-rc1
v2.0.0-rc2
v2.0.1
v2.1.0
v2.2.0
v2.2.0-beta
v2.2.0-rc1
v2.3.0
v2.3.0-beta
v2.3.0-rc1
v2.4.0
v2.4.0-beta
v2.4.0-rc1
v2.5.0
v2.5.0-beta
v2.5.0-rc1
v2.6.0
v2.6.0-beta
v2.6.0-rc1
v2.7.0
v2.7.0-beta
v2.7.0-rc1
v2.7.0-rc2
v2.8.0
v2.8.0-beta
v2.8.0-rc1
v2.8.0-rc2
v2.9.0
v2.9.0-beta
v2.9.0-rc1
v2.9.0-rc2
v3.*
v3.0.0
v3.0.0-beta
v3.0.0-rc1
v3.0.0-rc2
v3.0.0-rc3
v3.0.0-rc4
v3.1.0
v3.1.0-beta
v3.1.0-rc1
v3.1.0-rc2
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
v4.*
v4.0.0
v4.0.0-beta
v4.0.0-rc1
v4.0.0-rc2
v4.0.0-rc3
v4.0.0-rc4
v4.1.0
v4.1.0-beta
v4.1.0-rc1
v4.1.0-rc2
v4.1.0-rc3
v4.2.0
v4.2.0-beta
v4.2.0-rc1
v4.2.0-rc2
v4.3.0
v4.3.0-beta
v4.3.0-rc1
v4.3.0-rc2
v4.4.0
v4.4.0-beta
v4.4.0-rc1
v4.4.0-rc2
v4.5.0
v4.5.0-beta
v4.5.0-rc1
v4.5.0-rc2
v4.5.1
v4.5.10
v4.5.11
v4.5.12
v4.5.2
v4.5.3
v4.5.4
v4.5.5
v4.5.6
v4.5.7
v4.5.8
v4.5.9
v5.*
v5.0.0
v5.0.1
v5.0.2
v5.0.3
v5.0.4
v5.0.5
v5.0.6
v5.0.7
v5.0.8
v5.1.0
v5.1.1
v5.1.2
v5.1.3
v5.1.4
v5.1.5
v5.2.0
v5.2.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102586.json"