CVE-2026-44742

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Source
https://cve.org/CVERecord?id=CVE-2026-44742
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44742.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-44742
Aliases
Downstream
Related
Published
2026-05-07T18:09:20Z
Modified
2026-10-28T02:30:29Z
Severity
  • 7.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N CVSS Calculator
Summary
[none]
Details

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.

Database specific 
{
    "cna_assigner": "mitre",
    "cwe_ids": [
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44742.json"
}
References

Affected packages

Git / gitlab.com/mailman/postorius

Affected ranges

Type
GIT
Repo
https://gitlab.com/mailman/postorius
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
c4706abd05ba6bcf472fc674b160d3a9d6a4868b
Database specific
Show details 
{
    "extracted_events": [
        {
            "cpe": "cpe:2.3:a:postorius_project:postorius:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "last_affected": "1.3.13"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "range": [
                {
                    "fixed": "c4706abd05ba6bcf472fc674b160d3a9d6a4868b"
                }
            ],
            "source": "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

1.*
1.0.0
1.0.0b1
1.0.0b2
1.0.1
1.0.2
1.1.0
1.1.2
1.2.0
1.2.1
1.2.2
1.2.3
1.2.4
1.3.0
1.3.1
1.3.2
1.3.3
1.3.3rc1
1.3.3rc2
1.3.4
1.3.4rc1
1.3.6
1.3.6b1
1.3.7
1.3.8
postorius-1.*
postorius-1.0.0a-pypi
postorius-1.0.0a1
v1.*
v1.3.10
v1.3.11
v1.3.12
v1.3.13
v1.3.13a1
v1.3.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44742.json"