CVE-2026-48824

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-48824", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-22T20:57:10.977Z", "datePublished": "2026-07-20T15:02:52.107Z", "dateUpdated": "2026-07-20T19:07:58.952Z"}, "containers": {"cna": {"title": "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)", "problemTypes": [{"descriptions": [{"cweId": "CWE-770", "lang": "en", "description": "CWE-770: Allocation of Resources Without Limits or Throttling", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/axllent/mailpit/security/advisories/GHSA-28pq-6qxg-wg5r", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/axllent/mailpit/security/advisories/GHSA-28pq-6qxg-wg5r"}, {"name": "https://github.com/axllent/mailpit/releases/tag/v1.30.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/axllent/mailpit/releases/tag/v1.30.1"}], "affected": [{"vendor": "axllent", "product": "mailpit", "versions": [{"version": "< 1.30.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-20T15:02:52.107Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-28pq-6qxg-wg5r", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-07-20T19:01:37.901255Z", "id": "CVE-2026-48824", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-20T19:07:58.952Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-48824", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-20T19:01:37.901255Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-20T19:01:38.730Z"}}], "cna": {"title": "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)", "source": {"advisory": "GHSA-28pq-6qxg-wg5r", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}], "affected": [{"vendor": "axllent", "product": "mailpit", "versions": [{"status": "affected", "version": "< 1.30.1"}]}], "references": [{"url": "https://github.com/axllent/mailpit/security/advisories/GHSA-28pq-6qxg-wg5r", "name": "https://github.com/axllent/mailpit/security/advisories/GHSA-28pq-6qxg-wg5r", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/axllent/mailpit/releases/tag/v1.30.1", "name": "https://github.com/axllent/mailpit/releases/tag/v1.30.1", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-770", "description": "CWE-770: Allocation of Resources Without Limits or Throttling"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-20T15:02:52.107Z"}}}, "cveMetadata": {"cveId": "CVE-2026-48824", "state": "PUBLISHED", "dateUpdated": "2026-07-20T19:07:58.952Z", "dateReserved": "2026-05-22T20:57:10.977Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-07-20T15:02:52.107Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "mailpit", "vendor": "axllent", "versions": [{"status": "affected", "version": "< 1.30.1"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:axllent:mailpit:*:*:*:*:*:*:*:*", "matchCriteriaId": "EED16083-B2DE-4607-BB41-B3239D592BCF", "versionEndExcluding": "1.30.1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Mailpit es una herramienta de prueba de correo electr\u00f3nico y una API para desarrolladores. Antes de la versi\u00f3n 1.30.1, la correcci\u00f3n para GHSA-fpxj-m5q8-fphw (CVE-2026-45710, \u2019Mailpit: Establecer un l\u00edmite predeterminado de 50 MB p/m para prevenir DoS a trav\u00e9s de tama\u00f1os de cuerpo ilimitados de SMTP DATA y /api/v1/send\u2019) envolvi\u00f3 solo \u201cPOST /api/v1/send\u201d con \u201chttp.MaxBytesReader\u201d. Los otros cuatro endpoints de la API de Mailpit con cuerpo JSON \u201cPUT /api/v1/messages\u201d (SetReadStatus), \u201cDELETE /api/v1/messages\u201d (DeleteMessages), \u201cPUT /api/v1/tags\u201d (SetMessageTags) y \u201cPOST /api/v1/message/{id}/release\u201d (ReleaseMessage) todav\u00eda llaman a \u201cjson.NewDecoder(r.Body)\u201d directamente sin l\u00edmite de tama\u00f1o de cuerpo y permanecen accesibles sin autenticaci\u00f3n en el despliegue predeterminado de \u201cdocker run axllent/mailpit:latest\u201d. Un atacante remoto no autenticado puede publicar un slice \u201cIDs\u201d de varios millones de elementos y llevar el RSS de una l\u00ednea base de ~25 MiB a ~450 MiB por cuerpo de solicitud de 16 MB. La repetici\u00f3n a trav\u00e9s de m\u00faltiples conexiones acumula la misma amplificaci\u00f3n por solicitud por proceso. La versi\u00f3n 1.30.1 contiene un parche."}], "id": "CVE-2026-48824", "lastModified": "2026-10-24T20:10:00.137", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-48824", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-07-20T19:01:37.901255Z", "version": "2.0.3"}}]}, "published": "2026-07-20T16:17:03.080", "references": [{"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/axllent/mailpit/releases/tag/v1.30.1"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/axllent/mailpit/security/advisories/GHSA-28pq-6qxg-wg5r"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-770"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.30.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "mailpit", "source": "cna", "vendor": "axllent"}, "product": "mailpit", "vendor": "axllent"}], "created": "2026-07-20T22:30:18.913941+00:00", "updated": "2026-07-30T19:30:09.695983+00:00", "vendors": ["axllent", "axllent$PRODUCT$mailpit"]}