{"containers":{"cna":{"affected":[{"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:elixir-tesla:tesla:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.Tesla.Multipart'"],"packageName":"tesla","packageURL":"pkg:hex/tesla","product":"tesla","programFiles":["lib/tesla/multipart.ex"],"programRoutines":[{"name":"'Elixir.Tesla.Multipart':part_headers_for_disposition/1"},{"name":"'Elixir.Tesla.Multipart':add_field/4"},{"name":"'Elixir.Tesla.Multipart':add_file/3"},{"name":"'Elixir.Tesla.Multipart':add_file_content/4"}],"repo":"https://github.com/elixir-tesla/tesla","vendor":"elixir-tesla","versions":[{"lessThan":"1.18.3","status":"affected","version":"0.8.0","versionType":"semver"}]},{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:elixir-tesla:tesla:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.Tesla.Multipart'"],"packageName":"elixir-tesla/tesla","packageURL":"pkg:github/elixir-tesla/tesla","product":"tesla","programFiles":["lib/tesla/multipart.ex"],"programRoutines":[{"name":"'Elixir.Tesla.Multipart':part_headers_for_disposition/1"},{"name":"'Elixir.Tesla.Multipart':add_field/4"},{"name":"'Elixir.Tesla.Multipart':add_file/3"},{"name":"'Elixir.Tesla.Multipart':add_file_content/4"}],"repo":"https://github.com/elixir-tesla/tesla.git","vendor":"elixir-tesla","versions":[{"lessThan":"bb1a2c3da2775924d96e3db8e315dcc4d5d2246e","status":"affected","version":"6ebfdb9abe9c6f119408045b933d82462decd351","versionType":"git"}]}],"configurations":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"The application must pass untrusted input into a disposition parameter of <tt>Tesla.Multipart.add_field/4</tt>, <tt>Tesla.Multipart.add_file/3</tt>, or <tt>Tesla.Multipart.add_file_content/4</tt>."}],"value":"The application must pass untrusted input into a disposition parameter of Tesla.Multipart.add_field/4, Tesla.Multipart.add_file/3, or Tesla.Multipart.add_file_content/4."}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:elixir-tesla:tesla:*:*:*:*:*:*:*:*","versionEndExcluding":"1.18.3","versionStartIncluding":"0.8.0","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"AND"}],"credits":[{"lang":"en","type":"finder","value":"Peter Ullrich"},{"lang":"en","type":"remediation developer","value":"Yordis Prieto"},{"lang":"en","type":"analyst","value":"Jonatan Männchen"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Improper Encoding or Escaping of Output vulnerability in elixir-tesla tesla allows multipart part header injection via unescaped <tt>Content-Disposition</tt> parameter values.<p><tt>Tesla.Multipart.part_headers_for_disposition/1</tt> interpolates each disposition parameter as <tt>#{k}=\"#{v}\"</tt> with no validation of CR (<tt>\\r</tt>), LF (<tt>\\n</tt>), or double-quote characters. The values come verbatim from the caller via <tt>Tesla.Multipart.add_field/4</tt> (the <tt>name</tt> parameter), <tt>Tesla.Multipart.add_file/3</tt>, and <tt>Tesla.Multipart.add_file_content/4</tt> (both the <tt>filename</tt> parameter and other disposition opts). A <tt>\"</tt> in the value closes the quoted parameter early; a <tt>\\r\\n</tt> ends the <tt>Content-Disposition</tt> header line and starts a new part header (such as a forged <tt>Content-Type</tt>), or, after a second <tt>\\r\\n</tt>, ends the entire part header block and prepends bytes to the part body. The default-filename path in <tt>add_file/3</tt> derives the filename via <tt>Path.basename/1</tt>, which does not strip CR or LF, so any application forwarding a partially-attacker-controlled file path inherits the same issue.</p><p>This issue affects tesla: from 0.8.0 before 1.18.3.</p>"}],"value":"Improper Encoding or Escaping of Output vulnerability in elixir-tesla tesla allows multipart part header injection via unescaped Content-Disposition parameter values.\n\nTesla.Multipart.part_headers_for_disposition/1 interpolates each disposition parameter as #{k}=\"#{v}\" with no validation of CR (\\r), LF (\\n), or double-quote characters. The values come verbatim from the caller via Tesla.Multipart.add_field/4 (the name parameter), Tesla.Multipart.add_file/3, and Tesla.Multipart.add_file_content/4 (both the filename parameter and other disposition opts). A \" in the value closes the quoted parameter early; a \\r\\n ends the Content-Disposition header line and starts a new part header (such as a forged Content-Type), or, after a second \\r\\n, ends the entire part header block and prepends bytes to the part body. The default-filename path in add_file/3 derives the filename via Path.basename/1, which does not strip CR or LF, so any application forwarding a partially-attacker-controlled file path inherits the same issue.\n\nThis issue affects tesla: from 0.8.0 before 1.18.3."}],"impacts":[{"capecId":"CAPEC-105","descriptions":[{"lang":"en","value":"CAPEC-105 HTTP Request Splitting"}]}],"metrics":[{"cvssV4_0":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"LOCAL","baseScore":2.1,"baseSeverity":"LOW","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"LOW","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-116","description":"CWE-116 Improper Encoding or Escaping of Output","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-06-02T19:12:18.502Z","orgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","shortName":"EEF"},"references":[{"tags":["vendor-advisory","related"],"url":"https://github.com/elixir-tesla/tesla/security/advisories/GHSA-28jh-g32x-v9v4"},{"tags":["related"],"url":"https://cna.erlef.org/cves/CVE-2026-48598.html"},{"tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-48598"},{"tags":["patch"],"url":"https://github.com/elixir-tesla/tesla/commit/bb1a2c3da2775924d96e3db8e315dcc4d5d2246e"}],"source":{"discovery":"EXTERNAL"},"title":"CRLF injection in Tesla.Multipart disposition parameters allows multipart part header injection","workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Validate disposition parameter values before passing them to <tt>Tesla.Multipart.add_field/4</tt>, <tt>Tesla.Multipart.add_file/3</tt>, or <tt>Tesla.Multipart.add_file_content/4</tt>, rejecting any value that contains <tt>\\r</tt>, <tt>\\n</tt>, or <tt>\"</tt>."}],"value":"Validate disposition parameter values before passing them to Tesla.Multipart.add_field/4, Tesla.Multipart.add_file/3, or Tesla.Multipart.add_file_content/4, rejecting any value that contains \\r, \\n, or \"."}],"x_generator":{"engine":"cvelib 1.8.0"}}},"cveMetadata":{"assignerOrgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","assignerShortName":"EEF","cveId":"CVE-2026-48598","datePublished":"2026-06-02T19:08:19.921Z","dateReserved":"2026-05-22T09:36:56.834Z","dateUpdated":"2026-06-02T19:12:18.502Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"}