High severity7.2NVD Advisory· Published May 7, 2026· Updated May 26, 2026

CVE-2026-44742

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
postoriusPyPI	<= 1.3.13	—

Affected products

Mailman/Postoriusreferences
Postorius Project/Postorius
cpe:2.3:a:postorius_project:postorius:*:*:*:*:*:*:*:*
Range: <=1.3.13
ghsa-coords
pkg:pypi/postorius
Range: <= 1.3.13

Patches

Vulnerability mechanics

References

gitlab.com/mailman/postorius/-/commit/c4706abd05ba6bcf472fc674b160d3a9d6a4868bnvdPatchWEB
gitlab.com/mailman/postorius/-/merge_requests/972nvdIssue TrackingPatchWEB
www.openwall.com/lists/oss-security/2026/05/07/3nvdMailing ListPatchThird Party AdvisoryWEB
github.com/advisories/GHSA-r7c9-7pjq-hmm8ghsaADVISORY
gitlab.com/mailman/postorius/-/issues/620nvdIssue TrackingVendor AdvisoryWEB
nvd.nist.gov/vuln/detail/CVE-2026-44742ghsaADVISORY
lists.debian.org/debian-lts-announce/2026/05/msg00045.htmlnvd

News mentions

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cvss	0.468
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000