Vulnerability Details CVE-2026-44742
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 1.8%
CVSS Severity
CVSS v3 Score 7.2
References
- https://gitlab.com/mailman/postorius/-/commit/c4706abd05ba6bcf472fc674b160d3a9d6a4868b
- https://gitlab.com/mailman/postorius/-/issues/620
- https://gitlab.com/mailman/postorius/-/merge_requests/972
- https://www.openwall.com/lists/oss-security/2026/05/07/3
- https://lists.debian.org/debian-lts-announce/2026/05/msg00045.html
Products affected by CVE-2026-44742
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cpe:2.3:a:postorius_project:postorius:1.0.0
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cpe:2.3:a:postorius_project:postorius:1.0.1
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cpe:2.3:a:postorius_project:postorius:1.0.2
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cpe:2.3:a:postorius_project:postorius:1.0.3
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cpe:2.3:a:postorius_project:postorius:1.1.0
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cpe:2.3:a:postorius_project:postorius:1.1.1
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cpe:2.3:a:postorius_project:postorius:1.1.2
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cpe:2.3:a:postorius_project:postorius:1.2
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cpe:2.3:a:postorius_project:postorius:1.2.1
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cpe:2.3:a:postorius_project:postorius:1.2.2
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cpe:2.3:a:postorius_project:postorius:1.2.3
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cpe:2.3:a:postorius_project:postorius:1.2.4
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cpe:2.3:a:postorius_project:postorius:1.3.0
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cpe:2.3:a:postorius_project:postorius:1.3.1
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cpe:2.3:a:postorius_project:postorius:1.3.10
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cpe:2.3:a:postorius_project:postorius:1.3.11
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cpe:2.3:a:postorius_project:postorius:1.3.12
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cpe:2.3:a:postorius_project:postorius:1.3.13
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cpe:2.3:a:postorius_project:postorius:1.3.2
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cpe:2.3:a:postorius_project:postorius:1.3.3
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cpe:2.3:a:postorius_project:postorius:1.3.4
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cpe:2.3:a:postorius_project:postorius:1.3.5
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cpe:2.3:a:postorius_project:postorius:1.3.6
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cpe:2.3:a:postorius_project:postorius:1.3.7
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cpe:2.3:a:postorius_project:postorius:1.3.8
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cpe:2.3:a:postorius_project:postorius:1.3.9