{"id":"CVE-2026-44742","aliases":["GHSA-r7c9-7pjq-hmm8","PYSEC-2026-2891"],"title":"Postorius is vulnerable to XSS","summary":"Postorius is vulnerable to XSS","severity":"high","cvss":7.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","vendor":"postorius","product":"postorius","ecosystem":"pip","affected":["postorius <= 1.3.13"],"published":"2026-05-07","updated":"2026-07-13","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-r7c9-7pjq-hmm8","references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44742"},{"url":"https://gitlab.com/mailman/postorius"},{"url":"https://gitlab.com/mailman/postorius/-/commit/c4706abd05ba6bcf472fc674b160d3a9d6a4868b"},{"url":"https://gitlab.com/mailman/postorius/-/issues/620"},{"url":"https://gitlab.com/mailman/postorius/-/merge_requests/972"},{"url":"https://www.openwall.com/lists/oss-security/2026/05/07/3"}],"tags":["osv","pip"],"epss":0.00237,"epssPercentile":0.15004,"ingestedAt":"2026-07-13T18:58:02.544Z","slug":"CVE-2026-44742","body":"## Overview\n\nPostorius 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.\n\n## Affected packages\n\n- `postorius <= 1.3.13`\n\n## Remediation\n\nRefer to the advisory for the patched release.","depth":"twilight","depthScore":40,"depthScoreParts":{"impact":39.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}