{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-54893", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "state": "PUBLISHED", "assignerShortName": "EEF", "dateReserved": "2026-06-16T10:47:13.915Z", "datePublished": "2026-07-06T14:04:16.486Z", "dateUpdated": "2026-07-06T15:36:16.097Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://repo.hex.pm", "cpes": ["cpe:2.3:a:swoosh:swoosh:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.Swoosh.Adapters.MsGraph'"], "packageName": "swoosh", "packageURL": "pkg:hex/swoosh", "product": "swoosh", "programFiles": ["lib/swoosh/adapters/ms_graph.ex"], "programRoutines": [{"name": "'Elixir.Swoosh.Adapters.MsGraph':deliver/2"}, {"name": "'Elixir.Swoosh.Adapters.MsGraph':api_endpoint_url/2"}], "repo": "https://github.com/swoosh/swoosh", "vendor": "swoosh", "versions": [{"lessThan": "1.26.3", "status": "affected", "version": "1.12.0", "versionType": "semver"}]}, {"collectionURL": "https://github.com", "cpes": ["cpe:2.3:a:swoosh:swoosh:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.Swoosh.Adapters.MsGraph'"], "packageName": "swoosh/swoosh", "packageURL": "pkg:github/swoosh/swoosh", "product": "swoosh", "programFiles": ["lib/swoosh/adapters/ms_graph.ex"], "programRoutines": [{"name": "'Elixir.Swoosh.Adapters.MsGraph':deliver/2"}, {"name": "'Elixir.Swoosh.Adapters.MsGraph':api_endpoint_url/2"}], "repo": "https://github.com/swoosh/swoosh", "vendor": "swoosh", "versions": [{"lessThan": "e38235453e81d1727bfc8d91e69ec4cb211ccf61", "status": "affected", "version": "23bfcdab71aee4613858ba6d116bb3311b72aa58", "versionType": "git"}]}], "configurations": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>This vulnerability only affects applications that use <tt>Swoosh.Adapters.MsGraph</tt> and derive the email <tt>from</tt> address from untrusted or user-influenced input (for example a relay, a contact form, or a \"send as\" feature). 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Applications that always send with a fixed, trusted \"from\" address are not affected."}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:swoosh:swoosh:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.26.3", "versionStartIncluding": "1.12.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Peter Ullrich"}, {"lang": "en", "type": "remediation developer", "value": "Po Chen"}, {"lang": "en", "type": "analyst", "value": "Jonatan M\u00e4nnchen"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>URL path injection in the Microsoft Graph adapter of Swoosh. <tt>Swoosh.Adapters.MsGraph</tt> builds its Microsoft Graph API request URL by interpolating the sender's email address into the URL path (<tt>/users/{from}/sendMail</tt>) without percent-encoding or validation.</p><p>In applications that derive the <tt>from</tt> address from untrusted or user-influenced input (for example a relay, a contact form, or a \"send as\" feature), an attacker can place URL-special characters such as <tt>/</tt>, <tt>?</tt>, or <tt>#</tt> in the local part of the address to escape the intended path segment and rewrite the path and query string of the request. 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Alternatively, set a static <tt>:url</tt> in the adapter configuration, which bypasses interpolation of the <tt>from</tt> address into the request path.</p>"}], "value": "Validate or reject sender addresses that contain characters outside the allowed RFC 5321 set (in particular /, ?, #, and ..) before passing the email to the adapter. Alternatively, set a static :url in the adapter configuration, which bypasses interpolation of the from address into the request path."}], "x_generator": {"engine": "cvelib 1.8.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-07-06T15:36:04.140981Z", "id": "CVE-2026-54893", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"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": "2026-07-06T15:36:16.097Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-54893", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-06T15:36:04.140981Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-06T15:36:10.896Z"}}], "cna": {"title": "Email-derived URL path injection in the Swoosh Microsoft Graph adapter", "source": {"discovery": "EXTERNAL"}, "credits": [{"lang": "en", "type": "finder", "value": "Peter Ullrich"}, {"lang": "en", "type": "remediation developer", "value": "Po Chen"}, {"lang": "en", "type": "analyst", "value": "Jonatan M\u00e4nnchen"}], "impacts": [{"capecId": "CAPEC-664", "descriptions": [{"lang": "en", "value": "CAPEC-664 Server Side Request Forgery"}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "baseScore": 2.1, "attackVector": "LOCAL", "baseSeverity": "LOW", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "subIntegrityImpact": "LOW", "vulnIntegrityImpact": "LOW", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "vulnConfidentialityImpact": "NONE"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"cpes": ["cpe:2.3:a:swoosh:swoosh:*:*:*:*:*:*:*:*"], "repo": "https://github.com/swoosh/swoosh", "vendor": "swoosh", "modules": ["'Elixir.Swoosh.Adapters.MsGraph'"], "product": "swoosh", "versions": [{"status": "affected", "version": "1.12.0", "lessThan": "1.26.3", "versionType": "semver"}], "packageURL": "pkg:hex/swoosh", "packageName": "swoosh", "programFiles": ["lib/swoosh/adapters/ms_graph.ex"], "collectionURL": "https://repo.hex.pm", "defaultStatus": "unaffected", "programRoutines": [{"name": "'Elixir.Swoosh.Adapters.MsGraph':deliver/2"}, {"name": "'Elixir.Swoosh.Adapters.MsGraph':api_endpoint_url/2"}]}, {"cpes": ["cpe:2.3:a:swoosh:swoosh:*:*:*:*:*:*:*:*"], "repo": "https://github.com/swoosh/swoosh", "vendor": "swoosh", "modules": ["'Elixir.Swoosh.Adapters.MsGraph'"], "product": "swoosh", "versions": [{"status": "affected", "version": "23bfcdab71aee4613858ba6d116bb3311b72aa58", "lessThan": "e38235453e81d1727bfc8d91e69ec4cb211ccf61", "versionType": "git"}], "packageURL": "pkg:github/swoosh/swoosh", "packageName": "swoosh/swoosh", "programFiles": ["lib/swoosh/adapters/ms_graph.ex"], "collectionURL": "https://github.com", "defaultStatus": "unaffected", "programRoutines": [{"name": "'Elixir.Swoosh.Adapters.MsGraph':deliver/2"}, {"name": "'Elixir.Swoosh.Adapters.MsGraph':api_endpoint_url/2"}]}], "references": [{"url": "https://github.com/swoosh/swoosh/security/advisories/GHSA-754j-98wh-57rf", "tags": ["vendor-advisory", "related"]}, {"url": "https://cna.erlef.org/cves/CVE-2026-54893.html", "tags": ["related"]}, {"url": "https://osv.dev/vulnerability/EEF-CVE-2026-54893", "tags": ["related"]}, {"url": "https://github.com/swoosh/swoosh/commit/e38235453e81d1727bfc8d91e69ec4cb211ccf61", "tags": ["patch"]}], "workarounds": [{"lang": "en", "value": "Validate or reject sender addresses that contain characters outside the allowed RFC 5321 set (in particular /, ?, #, and ..) before passing the email to the adapter. 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