CVE-2026-21619 (GCVE-0-2026-21619)
Vulnerability from cvelistv5 – Published: 2026-02-27 17:57 – Updated: 2026-02-27 19:08
VLAI?
Title
Unsafe Deserialization of Erlang Terms in hex_core
Summary
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.
Severity ?
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| hexpm | hex_core |
Affected:
eb327f8edfe45507351e38cc0805aa12fa647f0b , < cdf726095bca85ad2549d146df1e831ae93c2b13
(git)
cpe:2.3:a:hexpm:hex_core:*:*:*:*:*:*:*:* |
|||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||
Credits
Michael Lubas / Paraxial.ia
Jonatan Männchen / EEF
Eric Meadows-Jönsson / Hex.pm
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\"affected\", \"version\": \"0.1.0\", \"lessThan\": \"0.12.1\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"pkg:hex/hex_core@0.1.0\", \"lessThan\": \"pkg:hex/hex_core@0.12.1\", \"versionType\": \"purl\"}], \"packageURL\": \"pkg:hex/hex_core\", \"packageName\": \"hex_core\", \"programFiles\": [\"src/hex_api.erl\"], \"collectionURL\": \"https://repo.hex.pm\", \"defaultStatus\": \"unaffected\", \"programRoutines\": [{\"name\": \"hex_core:request/4\"}]}, {\"cpes\": [\"cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:*\"], \"repo\": \"https://github.com/hexpm/hex\", \"vendor\": \"hexpm\", \"modules\": [\"mix_hex_api\"], \"product\": \"hex\", \"versions\": [{\"status\": \"affected\", \"version\": \"314546ac432229518714cc8e3336e916b9da6305\", \"lessThan\": \"636739f3322514e9303ca335fb630696fcbb3c95\", \"versionType\": \"git\"}], \"packageURL\": \"pkg:github/hexpm/hex\", \"packageName\": \"hexpm/hex\", \"programFiles\": [\"src/mix_hex_api.erl\"], \"collectionURL\": \"https://github.com\", \"defaultStatus\": \"unaffected\", \"programRoutines\": [{\"name\": \"mix_hex_api:request/4\"}]}, {\"cpes\": [\"cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:*\"], \"repo\": \"https://github.com/hexpm/hex\", \"vendor\": \"hexpm\", \"modules\": [\"mix_hex_api\"], \"product\": \"hex\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.3.0\", \"lessThan\": \"2.3.2\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"pkg:otp/hex@2.3.0\", \"lessThan\": \"pkg:otp/hex@2.3.2\", \"versionType\": \"purl\"}], \"packageURL\": \"pkg:otp/hex?repository_url=https:%2F%2Fgithub.com%2Fhexpm%2Fhex.git\u0026vcs_url=git%2Bhttps:%2F%2Fgithub.com%2Fhexpm%2Fhex.git\", \"packageName\": \"hex\", \"programFiles\": [\"src/mix_hex_api.erl\"], \"defaultStatus\": \"unaffected\", \"programRoutines\": [{\"name\": \"mix_hex_api:request/4\"}]}, {\"cpes\": [\"cpe:2.3:a:erlang:rebar3:*:*:*:*:*:*:*:*\"], \"repo\": \"https://github.com/erlang/rebar3\", \"vendor\": \"erlang\", \"modules\": [\"r3_hex_api\"], \"product\": \"rebar3\", \"versions\": [{\"status\": \"affected\", \"version\": \"209c02ec57c2cc3207ee0174c3af3675b8dc8f79\", \"lessThan\": \"1d4478f527e373de0b225951e53115450e0d9b9d\", \"versionType\": \"git\"}], \"packageURL\": \"pkg:github/erlang/rebar3\", \"packageName\": \"erlang/rebar3\", \"programFiles\": [\"apps/rebar/src/vendored/r3_hex_api.erl\"], \"collectionURL\": \"https://github.com\", \"defaultStatus\": \"unaffected\", \"programRoutines\": [{\"name\": \"r3_hex_api:request/4\"}]}, {\"cpes\": [\"cpe:2.3:a:erlang:rebar3:*:*:*:*:*:*:*:*\"], \"repo\": \"https://github.com/erlang/rebar3\", \"vendor\": \"erlang\", \"modules\": [\"r3_hex_api\"], \"product\": \"rebar3\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.9.1\", \"lessThan\": \"3.27.0\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"pkg:otp/rebar3@3.9.1\", \"lessThan\": \"pkg:otp/rebar3@3.27.0\", \"versionType\": \"purl\"}], \"packageURL\": \"pkg:otp/rebar3?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Frebar3.git\u0026vcs_url=git%2Bhttps:%2F%2Fgithub.com%2Ferlang%2Frebar3.git\", \"packageName\": \"rebar3\", \"programFiles\": [\"apps/rebar/src/vendored/r3_hex_api.erl\"], \"collectionURL\": \"https://github.com\", \"defaultStatus\": \"unaffected\", \"programRoutines\": [{\"name\": \"r3_hex_api:request/4\"}]}], \"references\": [{\"url\": \"https://github.com/hexpm/hex_core/security/advisories/GHSA-hx9w-f2w9-9g96\", \"tags\": [\"vendor-advisory\"]}, {\"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\", \"tags\": [\"patch\"]}], \"x_generator\": {\"engine\": \"Vulnogram 0.5.0\"}, \"descriptions\": [{\"lang\": \"en\", \"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.\", \"supportingMedia\": [{\"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.\u003cp\u003e This vulnerability is associated with program files \u003ctt\u003esrc/hex_api.erl\u003c/tt\u003e, \u003ctt\u003esrc/mix_hex_api.erl\u003c/tt\u003e, \u003ctt\u003eapps/rebar/src/vendored/r3_hex_api.erl\u003c/tt\u003e and program routines \u003ctt\u003ehex_core:request/4\u003c/tt\u003e, \u003ctt\u003emix_hex_api:request/4\u003c/tt\u003e, \u003ctt\u003er3_hex_api:request/4\u003c/tt\u003e.\u003c/p\u003e\u003cp\u003eThis 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.\u003c/p\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-400\", \"description\": \"CWE-400 Uncontrolled Resource Consumption\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-502\", \"description\": \"CWE-502 Deserialization of Untrusted Data\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:hexpm:hex_core:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"0.12.1\", \"versionStartIncluding\": \"0.1.0\"}], \"operator\": \"AND\"}, {\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"2.3.2\", \"versionStartIncluding\": \"2.3.0\"}], \"operator\": \"AND\"}, {\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:erlang:rebar3:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"3.27.0\", \"versionStartIncluding\": \"3.9.1\"}], \"operator\": \"AND\"}], \"operator\": \"OR\"}], \"providerMetadata\": {\"orgId\": \"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\", \"shortName\": \"EEF\", \"dateUpdated\": \"2026-02-27T17:57:11.513Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-21619\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-02-27T19:08:57.019Z\", \"dateReserved\": \"2026-01-01T03:46:45.933Z\", \"assignerOrgId\": \"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\", \"datePublished\": \"2026-02-27T17:57:11.513Z\", \"assignerShortName\": \"EEF\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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