CVE-2026-47783
HIGH
CVSS 8.1
No EPSS data
Description
In memcached before 1.6.42, username data for SASL password database authentication has a timing side channel because a loop exits as soon as a valid username is found by sasl_server_userdb_checkpass.
CVSS details
EPSS
This CVE is not currently listed in the EPSS dataset.
Show JSON
{
"cve": {
"id": "CVE-2026-47783",
"cveTags": [],
"metrics": {
"cvssMetricV31": [
{
"type": "Secondary",
"source": "cve@mitre.org",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 8.1,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "HIGH",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 2.2
}
]
},
"published": "2026-05-20T07:16:15.533",
"references": [
{
"url": "https://github.com/memcached/memcached/commit/d13f282b4bce33a9c33b8a1bbf07f12114160fed",
"tags": [
"Patch"
],
"source": "cve@mitre.org"
},
{
"url": "https://github.com/memcached/memcached/compare/1.6.41...1.6.42",
"tags": [
"Release Notes"
],
"source": "cve@mitre.org"
},
{
"url": "https://github.com/memcached/memcached/wiki/ReleaseNotes1642",
"tags": [
"Release Notes"
],
"source": "cve@mitre.org"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Primary",
"source": "cve@mitre.org",
"description": [
{
"lang": "en",
"value": "CWE-208"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In memcached before 1.6.42, username data for SASL password database authentication has a timing side channel because a loop exits as soon as a valid username is found by sasl_server_userdb_checkpass."
}
],
"lastModified": "2026-05-21T17:06:40.670",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:memcached:memcached:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "4EA02C48-8B8D-4F73-9DA2-33B1535B1AF2",
"versionEndExcluding": "1.6.42"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "cve@mitre.org"
}
}