{"cve":"CVE-2026-44742","nvd":{"published":"2026-05-07T19:16:02.500","modified":"2026-06-17T10:51:17.550","status":"Modified","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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-79"],"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":["postorius_project:postorius"],"source":"nvd","synced_at":"2026-10-19T22:33:55.586217763+00:00"},"epss":{"cve":"CVE-2026-44742","score":0.00237,"percentile":0.14785,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-r7c9-7pjq-hmm8","url":"https://osv.dev/vulnerability/GHSA-r7c9-7pjq-hmm8","summary":"Postorius is vulnerable to XSS","modified":"2026-07-13T16:42:24.933667417Z","packages":[{"ecosystem":"PyPI","name":"postorius","purl":"pkg:pypi/postorius","ranges":["<=1.3.13"],"fixed":[]}]},{"id":"PYSEC-2026-2891","url":"https://osv.dev/vulnerability/PYSEC-2026-2891","summary":"Postorius is vulnerable to XSS","modified":"2026-07-13T16:32:58.820403307Z","packages":[{"ecosystem":"PyPI","name":"postorius","purl":"pkg:pypi/postorius","ranges":["<=1.3.13"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}