CVE-2026-44742
HIGH
CVSS 7.2
No EPSS data
Description
Postorius through 1.3.13 does not escape HTML in the message subject when rendering it in the Held messages pop-up, as exploited in the wild in May 2026.
CVSS details
EPSS
This CVE is not currently listed in the EPSS dataset.
Show JSON
{
"cve": {
"id": "CVE-2026-44742",
"cveTags": [],
"metrics": {
"cvssMetricV31": [
{
"type": "Secondary",
"source": "cve@mitre.org",
"cvssData": {
"scope": "CHANGED",
"version": "3.1",
"baseScore": 7.2,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
"integrityImpact": "LOW",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "LOW"
},
"impactScore": 2.7,
"exploitabilityScore": 3.9
}
]
},
"published": "2026-05-07T19:16:02.500",
"references": [
{
"url": "https://gitlab.com/mailman/postorius/-/commit/c4706abd05ba6bcf472fc674b160d3a9d6a4868b",
"source": "cve@mitre.org"
},
{
"url": "https://gitlab.com/mailman/postorius/-/issues/620",
"source": "cve@mitre.org"
},
{
"url": "https://gitlab.com/mailman/postorius/-/merge_requests/972",
"source": "cve@mitre.org"
},
{
"url": "https://www.openwall.com/lists/oss-security/2026/05/07/3",
"source": "cve@mitre.org"
}
],
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"type": "Secondary",
"source": "cve@mitre.org",
"description": [
{
"lang": "en",
"value": "CWE-79"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Postorius through 1.3.13 does not escape HTML in the message subject when rendering it in the Held messages pop-up, as exploited in the wild in May 2026."
}
],
"lastModified": "2026-05-07T19:53:21.760",
"sourceIdentifier": "cve@mitre.org"
}
}