{"id":"CVE-2026-48824","summary":"Mailpit: Sibling-endpoint memory-exhaustion DoS via unbounded JSON body on /api/v1/messages, /api/v1/tags, and /api/v1/message/{id}/release (incomplete fix of GHSA-fpxj-m5q8-fphw)","details":"Mailpit is an email testing tool and API for developers. Prior to version 1.30.1, the fix for GHSA-fpxj-m5q8-fphw (CVE-2026-45710, \"Mailpit: Set a default 50MB p/m limit to prevent DoS via unlimited SMTP DATA and /api/v1/send body sizes\") wrapped only `POST /api/v1/send` with `http.MaxBytesReader`. The four other Mailpit JSON-body API endpoints  `PUT /api/v1/messages` (SetReadStatus), `DELETE /api/v1/messages` (DeleteMessages), `PUT /api/v1/tags` (SetMessageTags), and `POST /api/v1/message/{id}/release` (ReleaseMessage)  still call `json.NewDecoder(r.Body)` directly with no body-size cap and remain reachable unauthenticated in the default `docker run axllent/mailpit:latest` deploy. An unauthenticated remote attacker can post a multi-million-element `IDs` slice and drive RSS from ~25 MiB baseline to ~450 MiB per 16 MB request body. Repeating across multiple connections accumulates the same per-request amplification per process. Version 1.30.1 contains a patch.","aliases":["GHSA-28pq-6qxg-wg5r","GO-2026-5868"],"modified":"2026-08-04T11:51:04.687693495Z","published":"2026-07-20T15:02:52.107Z","related":["openSUSE-SU-2026:21483-1"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-770"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48824.json"},"references":[{"type":"WEB","url":"https://github.com/axllent/mailpit/releases/tag/v1.30.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48824.json"},{"type":"ADVISORY","url":"https://github.com/axllent/mailpit/security/advisories/GHSA-28pq-6qxg-wg5r"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-48824"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/axllent/mailpit","events":[{"introduced":"0"},{"fixed":"16a8f9632ce6addb64d832f95842f935e87244bb"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"1.30.1"}],"source":"AFFECTED_FIELD"}}],"versions":["v1.30.0","v1.29.7","v1.29.6","v1.29.5","v1.29.4","v1.29.3","v1.29.2","v1.29.1","v1.29.0","v1.28.4","v1.28.3","v1.28.2","v1.28.1","v1.28.0","v1.27.11","v1.27.10","v1.27.9","v1.27.8","v1.27.7","v1.27.6","v1.27.5","v1.27.4","v1.27.3","v1.27.2","v1.27.1","v1.27.0","v1.26.2","v1.26.1","v1.26.0","v1.25.1","v1.25.0","v1.24.2","v1.24.1","v1.24.0","v1.23.2","v1.23.1","v1.23.0","v1.22.3","v1.22.2","v1.22.1","v1.22.0","v1.21.8","v1.21.7","v1.21.6","v1.21.5","v1.21.4","v1.21.3","v1.21.2","v1.21.1","v1.21.0","v1.20.7","v1.20.6","v1.20.5","v1.20.4","v1.20.3","v1.20.2","v1.20.1","v1.20.0","v1.19.3","v1.19.2","v1.19.1","v1.19.0","v1.18.7","v1.18.6","v1.18.5","v1.18.4","v1.18.3","v1.18.2","v1.18.1","v1.18.0","v1.17.1","v1.17.0","v1.16.0","v1.15.1","v1.15.0","v1.14.4","v1.14.3","v1.14.2","v1.14.1","v1.14.0","v1.13.3","v1.13.2","v1.13.1","v1.13.0","v1.12.1","v1.12.0","v1.11.1","v1.11.0","v1.10.4","v1.10.3","v1.10.2","v1.10.1","v1.10.0","v1.9.10","v1.9.9","v1.9.8","v1.9.7","v1.9.6","v1.9.5","v1.9.4","v1.9.3","v1.9.2","v1.9.1","v1.9.0","v1.8.4","v1.8.3","v1.8.2","v1.8.1","v1.8.0","v1.7.1","v1.7.0","v1.6.22","v1.6.21","v1.6.20","v1.6.19","v1.6.18","v1.6.17","v1.6.16","v1.6.15","v1.6.14","v1.6.13","v1.6.12","v1.6.11","v1.6.10","v1.6.9","v1.6.8","v1.6.7","v1.6.6","v1.6.5","v1.6.4","v1.6.3","v1.6.2","v1.6.1","v1.6.0","v1.5.5","v1.5.4","v1.5.3","v1.5.2","v1.5.1","v1.5.0","v1.4.0","v1.3.11","v1.3.10","v1.3.9","v1.3.8","v1.3.7","v1.3.6","v1.3.5","v1.3.4","v1.3.3","v1.3.2","v1.3.1","v1.3.0","v1.2.9","v1.2.8","v1.2.7","v1.2.6","1.2.5","1.2.4","1.2.3","1.2.2","1.2.1","1.2.0","1.1.7"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48824.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}]}