{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-48594","assignerOrgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","state":"PUBLISHED","assignerShortName":"EEF","dateReserved":"2026-05-22T09:36:56.834Z","datePublished":"2026-06-02T19:08:49.596Z","dateUpdated":"2026-09-24T20:50:12.704Z"},"containers":{"cna":{"affected":[{"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:elixir-tesla:tesla:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.Tesla.Middleware.Compression'","'Elixir.Tesla.Middleware.DecompressResponse'"],"packageName":"tesla","packageURL":"pkg:hex/tesla","product":"tesla","programFiles":["lib/tesla/middleware/compression.ex"],"programRoutines":[{"name":"'Elixir.Tesla.Middleware.DecompressResponse':call/3"},{"name":"'Elixir.Tesla.Middleware.Compression':call/3"}],"repo":"https://github.com/elixir-tesla/tesla","vendor":"elixir-tesla","versions":[{"lessThan":"1.18.3","status":"affected","version":"0.6.0","versionType":"semver"}]},{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:elixir-tesla:tesla:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.Tesla.Middleware.Compression'","'Elixir.Tesla.Middleware.DecompressResponse'"],"packageName":"elixir-tesla/tesla","packageURL":"pkg:github/elixir-tesla/tesla","product":"tesla","programFiles":["lib/tesla/middleware/compression.ex"],"programRoutines":[{"name":"'Elixir.Tesla.Middleware.DecompressResponse':call/3"},{"name":"'Elixir.Tesla.Middleware.Compression':call/3"}],"repo":"https://github.com/elixir-tesla/tesla","vendor":"elixir-tesla","versions":[{"lessThan":"340f75b5d191dc747ef7ac6365bd002d1cd55a9d","status":"affected","version":"5bd90bb5cf0d15e375edc2a66fa322292940fce2","versionType":"git"}]}],"configurations":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>The application must include <code>Tesla.Middleware.DecompressResponse</code> or <code>Tesla.Middleware.Compression</code> in its Tesla middleware pipeline.</p>"},{"base64":false,"type":"text/markdown","value":"The application must include `Tesla.Middleware.DecompressResponse` or `Tesla.Middleware.Compression` in its Tesla middleware pipeline."}],"value":"The application must include Tesla.Middleware.DecompressResponse or Tesla.Middleware.Compression in its Tesla middleware pipeline."}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:elixir-tesla:tesla:*:*:*:*:*:*:*:*","versionEndExcluding":"1.18.3","versionStartIncluding":"0.6.0","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 / EEF"}],"datePublic":"2026-06-02T19:08:49.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in elixir-tesla tesla allows a denial of service via decompression bomb in HTTP response bodies.</p>\n<p>When <code>Tesla.Middleware.DecompressResponse</code> or <code>Tesla.Middleware.Compression</code> is included in a Tesla middleware pipeline, HTTP response bodies are decompressed eagerly with no size limit. The <code>decompress_body/2</code> function in <code>lib/tesla/middleware/compression.ex</code> passes the entire response body to <code>:zlib.gunzip/1</code> or <code>:zlib.unzip/1</code> without any cap on the output size. Additionally, <code>compression_algorithms/1</code> splits the <code>content-encoding</code> header on commas and <code>decompress_body/2</code> recurses once per token, applying a decompression pass on each iteration. A server advertising <code>content-encoding: gzip, gzip, gzip, gzip</code> causes four recursive decompression passes, yielding exponential amplification: each gzip layer can expand its input roughly 1000x, so a payload of a few hundred bytes on the wire inflates to gigabytes of BEAM heap, exhausting memory and crashing or freezing the calling process.</p>\n<p>This issue affects tesla: from 0.6.0 before 1.18.3.</p>"},{"base64":false,"type":"text/markdown","value":"Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in elixir-tesla tesla allows a denial of service via decompression bomb in HTTP response bodies.\n\nWhen `Tesla.Middleware.DecompressResponse` or `Tesla.Middleware.Compression` is included in a Tesla middleware pipeline, HTTP response bodies are decompressed eagerly with no size limit. The `decompress_body/2` function in `lib/tesla/middleware/compression.ex` passes the entire response body to `:zlib.gunzip/1` or `:zlib.unzip/1` without any cap on the output size. Additionally, `compression_algorithms/1` splits the `content-encoding` header on commas and `decompress_body/2` recurses once per token, applying a decompression pass on each iteration. A server advertising `content-encoding: gzip, gzip, gzip, gzip` causes four recursive decompression passes, yielding exponential amplification: each gzip layer can expand its input roughly 1000x, so a payload of a few hundred bytes on the wire inflates to gigabytes of BEAM heap, exhausting memory and crashing or freezing the calling process.\n\nThis issue affects tesla: from 0.6.0 before 1.18.3."}],"value":"Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in elixir-tesla tesla allows a denial of service via decompression bomb in HTTP response bodies.\n\nWhen Tesla.Middleware.DecompressResponse or Tesla.Middleware.Compression is included in a Tesla middleware pipeline, HTTP response bodies are decompressed eagerly with no size limit. The decompress_body/2 function in lib/tesla/middleware/compression.ex passes the entire response body to :zlib.gunzip/1 or :zlib.unzip/1 without any cap on the output size. Additionally, compression_algorithms/1 splits the content-encoding header on commas and decompress_body/2 recurses once per token, applying a decompression pass on each iteration. A server advertising content-encoding: gzip, gzip, gzip, gzip causes four recursive decompression passes, yielding exponential amplification: each gzip layer can expand its input roughly 1000x, so a payload of a few hundred bytes on the wire inflates to gigabytes of BEAM heap, exhausting memory and crashing or freezing the calling process.\n\nThis issue affects tesla: from 0.6.0 before 1.18.3."}],"impacts":[{"capecId":"CAPEC-130","descriptions":[{"lang":"en","value":"CAPEC-130 Excessive Allocation"}]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":8.2,"baseSeverity":"HIGH","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-409","description":"CWE-409 Improper Handling of Highly Compressed Data (Data Amplification)","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","shortName":"EEF","dateUpdated":"2026-09-24T20:50:12.704Z"},"references":[{"tags":["vendor-advisory","related"],"url":"https://github.com/elixir-tesla/tesla/security/advisories/GHSA-mc85-72gr-vm9f"},{"name":"EEF CNA record for CVE-2026-48594","tags":["related"],"url":"https://cna.erlef.org/cves/CVE-2026-48594.html"},{"name":"OSV record EEF-CVE-2026-48594","tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-48594"},{"name":"Introducing commit 5bd90bb in elixir-tesla/tesla","tags":["related"],"url":"https://github.com/elixir-tesla/tesla/commit/5bd90bb5cf0d15e375edc2a66fa322292940fce2"},{"name":"Fix commit 340f75b in elixir-tesla/tesla","tags":["patch"],"url":"https://github.com/elixir-tesla/tesla/commit/340f75b5d191dc747ef7ac6365bd002d1cd55a9d"}],"source":{"discovery":"EXTERNAL"},"title":"Decompression bomb in Tesla.Middleware.DecompressResponse and Tesla.Middleware.Compression"},"adp":[{"references":[{"url":"https://github.com/elixir-tesla/tesla/security/advisories/GHSA-mc85-72gr-vm9f","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-03T14:39:48.594599Z","id":"CVE-2026-48594","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":"2026-06-03T14:39:54.578Z"}}]}}