{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-21619", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "state": "PUBLISHED", "assignerShortName": "EEF", "dateReserved": "2026-01-01T03:46:45.933Z", "datePublished": "2026-02-27T17:57:11.513Z", "dateUpdated": "2026-05-27T15:40:33.166Z" }, "containers": { "cna": { "affected": [ { "collectionURL": "https://github.com", "cpes": [ "cpe:2.3:a:hexpm:hex_core:*:*:*:*:*:*:*:*" ], "defaultStatus": "unaffected", "modules": [ "hex_api" ], "packageName": "hexpm/hex_core", "packageURL": "pkg:github/hexpm/hex_core", "product": "hex_core", "programFiles": [ "src/hex_api.erl" ], "programRoutines": [ { "name": "hex_core:request/4" } ], "repo": "https://github.com/hexpm/hex_core", "vendor": "hexpm", "versions": [ { "lessThan": "cdf726095bca85ad2549d146df1e831ae93c2b13", "status": "affected", "version": "eb327f8edfe45507351e38cc0805aa12fa647f0b", "versionType": "git" } ] }, { "collectionURL": "https://repo.hex.pm", "cpes": [ "cpe:2.3:a:hexpm:hex_core:*:*:*:*:*:*:*:*" ], "defaultStatus": "unaffected", "modules": [ "hex_api" ], "packageName": "hex_core", "packageURL": "pkg:hex/hex_core", "product": "hex_core", "programFiles": [ "src/hex_api.erl" ], "programRoutines": [ { "name": "hex_core:request/4" } ], "repo": "https://github.com/hexpm/hex_core", "vendor": "hexpm", "versions": [ { "lessThan": "0.12.1", "status": "affected", "version": "0.1.0", "versionType": "semver" } ] }, { "collectionURL": "https://github.com", "cpes": [ "cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:*" ], "defaultStatus": "unaffected", "modules": [ "mix_hex_api" ], "packageName": "hexpm/hex", "packageURL": "pkg:github/hexpm/hex", "product": "hex", "programFiles": [ "src/mix_hex_api.erl" ], "programRoutines": [ { "name": "mix_hex_api:request/4" } ], "repo": "https://github.com/hexpm/hex", "vendor": "hexpm", "versions": [ { "lessThan": "636739f3322514e9303ca335fb630696fcbb3c95", "status": "affected", "version": "314546ac432229518714cc8e3336e916b9da6305", "versionType": "git" } ] }, { "cpes": [ "cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:*" ], "defaultStatus": "unaffected", "modules": [ "mix_hex_api" ], "packageName": "hex", "packageURL": "pkg:otp/hex?repository_url=https:%2F%2Fgithub.com%2Fhexpm%2Fhex.git&vcs_url=git%2Bhttps:%2F%2Fgithub.com%2Fhexpm%2Fhex.git", "product": "hex", "programFiles": [ "src/mix_hex_api.erl" ], "programRoutines": [ { "name": "mix_hex_api:request/4" } ], "repo": "https://github.com/hexpm/hex", "vendor": "hexpm", "versions": [ { "lessThan": "2.3.2", "status": "affected", "version": "2.3.0", "versionType": "semver" } ] }, { "collectionURL": "https://github.com", "cpes": [ "cpe:2.3:a:erlang:rebar3:*:*:*:*:*:*:*:*" ], "defaultStatus": "unaffected", "modules": [ "r3_hex_api" ], "packageName": "erlang/rebar3", "packageURL": "pkg:github/erlang/rebar3", "product": "rebar3", "programFiles": [ "apps/rebar/src/vendored/r3_hex_api.erl" ], "programRoutines": [ { "name": "r3_hex_api:request/4" } ], "repo": "https://github.com/erlang/rebar3", "vendor": "erlang", "versions": [ { "lessThan": "1d4478f527e373de0b225951e53115450e0d9b9d", "status": "affected", "version": "209c02ec57c2cc3207ee0174c3af3675b8dc8f79", "versionType": "git" } ] }, { "collectionURL": "https://github.com", "cpes": [ "cpe:2.3:a:erlang:rebar3:*:*:*:*:*:*:*:*" ], "defaultStatus": "unaffected", "modules": [ "r3_hex_api" ], "packageName": "rebar3", "packageURL": "pkg:otp/rebar3?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Frebar3.git&vcs_url=git%2Bhttps:%2F%2Fgithub.com%2Ferlang%2Frebar3.git", "product": "rebar3", "programFiles": [ "apps/rebar/src/vendored/r3_hex_api.erl" ], "programRoutines": [ { "name": "r3_hex_api:request/4" } ], "repo": "https://github.com/erlang/rebar3", "vendor": "erlang", "versions": [ { "lessThan": "3.27.0", "status": "affected", "version": "3.9.1", "versionType": "semver" } ] } ], "cpeApplicability": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:a:hexpm:hex_core:*:*:*:*:*:*:*:*", "versionEndExcluding": "0.12.1", "versionStartIncluding": "0.1.0", "vulnerable": true } ], "negate": false, "operator": "AND" }, { "cpeMatch": [ { "criteria": "cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.3.2", "versionStartIncluding": "2.3.0", "vulnerable": true } ], "negate": false, "operator": "AND" }, { "cpeMatch": [ { "criteria": "cpe:2.3:a:erlang:rebar3:*:*:*:*:*:*:*:*", "versionEndExcluding": "3.27.0", "versionStartIncluding": "3.9.1", "vulnerable": true } ], "negate": false, "operator": "AND" } ], "operator": "OR" } ], "credits": [ { "lang": "en", "type": "finder", "value": "Michael Lubas / Paraxial.io" }, { "lang": "en", "type": "remediation developer", "value": "Jonatan Männchen / EEF" }, { "lang": "en", "type": "remediation reviewer", "value": "Eric Meadows-Jönsson / Hex.pm" } ], "descriptions": [ { "lang": "en", "supportingMedia": [ { "base64": false, "type": "text/html", "value": "Uncontrolled Resource Consumption, Deserialization of Untrusted Data vulnerability in hexpm hex_core (hex_api modules), hexpm hex (mix_hex_api modules), erlang rebar3 (r3_hex_api modules) allows Object Injection, Excessive Allocation.

This vulnerability is associated with program files src/hex_api.erl, src/mix_hex_api.erl, apps/rebar/src/vendored/r3_hex_api.erl and program routines hex_core:request/4, mix_hex_api:request/4, r3_hex_api:request/4.

This issue affects hex_core: from 0.1.0 before 0.12.1; hex: from 2.3.0 before 2.3.2; rebar3: from 3.9.1 before 3.27.0.

" } ], "value": "Uncontrolled Resource Consumption, Deserialization of Untrusted Data vulnerability in hexpm hex_core (hex_api modules), hexpm hex (mix_hex_api modules), erlang rebar3 (r3_hex_api modules) allows Object Injection, Excessive Allocation. This vulnerability is associated with program files src/hex_api.erl, src/mix_hex_api.erl, apps/rebar/src/vendored/r3_hex_api.erl and program routines hex_core:request/4, mix_hex_api:request/4, r3_hex_api:request/4.\n\nThis issue affects hex_core: from 0.1.0 before 0.12.1; hex: from 2.3.0 before 2.3.2; rebar3: from 3.9.1 before 3.27.0." } ], "impacts": [ { "capecId": "CAPEC-586", "descriptions": [ { "lang": "en", "value": "CAPEC-586 Object Injection" } ] }, { "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": 2, "baseSeverity": "LOW", "exploitMaturity": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "ACTIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED" }, "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ] } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-400", "description": "CWE-400 Uncontrolled Resource Consumption", "lang": "en", "type": "CWE" } ] }, { "descriptions": [ { "cweId": "CWE-502", "description": "CWE-502 Deserialization of Untrusted Data", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "shortName": "EEF", "dateUpdated": "2026-05-27T15:40:33.166Z" }, "references": [ { "tags": [ "vendor-advisory", "related" ], "url": "https://github.com/hexpm/hex_core/security/advisories/GHSA-hx9w-f2w9-9g96" }, { "tags": [ "related" ], "url": "https://cna.erlef.org/cves/CVE-2026-21619.html" }, { "tags": [ "related" ], "url": "https://osv.dev/vulnerability/EEF-CVE-2026-21619" }, { "tags": [ "patch" ], "url": "https://github.com/hexpm/hex_core/commit/cdf726095bca85ad2549d146df1e831ae93c2b13" }, { "tags": [ "patch" ], "url": "https://github.com/hexpm/hex/commit/636739f3322514e9303ca335fb630696fcbb3c95" }, { "tags": [ "patch" ], "url": "https://github.com/erlang/rebar3/commit/1d4478f527e373de0b225951e53115450e0d9b9d" } ], "source": { "discovery": "INTERNAL" }, "title": "Unsafe Deserialization of Erlang Terms in hex_core", "x_generator": { "engine": "Vulnogram 0.5.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-02-27T19:08:49.652728Z", "id": "CVE-2026-21619", "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": "2026-02-27T19:08:57.019Z" } } ] } }