Search
Find a vulnerability
Search criteria
ⓘ
Use this form to refine search results.
Full-text search supports keyword queries with ranking and filtering.
You can combine vendor, product, and sources to narrow results.
Enable “Apply ordering” to sort by date instead of relevance.
2 vulnerabilities found for hex_core by hexpm
CVE-2026-21619 (GCVE-0-2026-21619)
Vulnerability from nvd – Published: 2026-02-27 17:57 – Updated: 2026-05-27 15:40
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
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
6 references
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| hexpm | hex_core |
Affected:
eb327f8edfe45507351e38cc0805aa12fa647f0b , < cdf726095bca85ad2549d146df1e831ae93c2b13
(git)
cpe:2.3:a:hexpm:hex_core:*:*:*:*:*:*:*:* |
|
| hexpm | hex_core |
Affected:
0.1.0 , < 0.12.1
(semver)
cpe:2.3:a:hexpm:hex_core:*:*:*:*:*:*:*:* |
|
| hexpm | hex |
Affected:
314546ac432229518714cc8e3336e916b9da6305 , < 636739f3322514e9303ca335fb630696fcbb3c95
(git)
cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:* |
|
| hexpm | hex |
Affected:
2.3.0 , < 2.3.2
(semver)
cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:* |
|
| erlang | rebar3 |
Affected:
209c02ec57c2cc3207ee0174c3af3675b8dc8f79 , < 1d4478f527e373de0b225951e53115450e0d9b9d
(git)
cpe:2.3:a:erlang:rebar3:*:*:*:*:*:*:*:* |
|
| erlang | rebar3 |
Affected:
3.9.1 , < 3.27.0
(semver)
cpe:2.3:a:erlang:rebar3:*:*:*:*:*:*:*:* |
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-21619",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-02-27T19:08:49.652728Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-02-27T19:08:57.019Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"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\u0026vcs_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\u0026vcs_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 M\u00e4nnchen / EEF"
},
{
"lang": "en",
"type": "remediation reviewer",
"value": "Eric Meadows-J\u00f6nsson / 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.\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"
}
],
"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": {
"dateUpdated": "2026-05-27T15:40:33.166Z",
"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"shortName": "EEF"
},
"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"
}
}
},
"cveMetadata": {
"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"assignerShortName": "EEF",
"cveId": "CVE-2026-21619",
"datePublished": "2026-02-27T17:57:11.513Z",
"dateReserved": "2026-01-01T03:46:45.933Z",
"dateUpdated": "2026-05-27T15:40:33.166Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-21619 (GCVE-0-2026-21619)
Vulnerability from cvelistv5 – Published: 2026-02-27 17:57 – Updated: 2026-05-27 15:40
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
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
6 references
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| hexpm | hex_core |
Affected:
eb327f8edfe45507351e38cc0805aa12fa647f0b , < cdf726095bca85ad2549d146df1e831ae93c2b13
(git)
cpe:2.3:a:hexpm:hex_core:*:*:*:*:*:*:*:* |
|
| hexpm | hex_core |
Affected:
0.1.0 , < 0.12.1
(semver)
cpe:2.3:a:hexpm:hex_core:*:*:*:*:*:*:*:* |
|
| hexpm | hex |
Affected:
314546ac432229518714cc8e3336e916b9da6305 , < 636739f3322514e9303ca335fb630696fcbb3c95
(git)
cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:* |
|
| hexpm | hex |
Affected:
2.3.0 , < 2.3.2
(semver)
cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:* |
|
| erlang | rebar3 |
Affected:
209c02ec57c2cc3207ee0174c3af3675b8dc8f79 , < 1d4478f527e373de0b225951e53115450e0d9b9d
(git)
cpe:2.3:a:erlang:rebar3:*:*:*:*:*:*:*:* |
|
| erlang | rebar3 |
Affected:
3.9.1 , < 3.27.0
(semver)
cpe:2.3:a:erlang:rebar3:*:*:*:*:*:*:*:* |
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-21619",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-02-27T19:08:49.652728Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-02-27T19:08:57.019Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"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\u0026vcs_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\u0026vcs_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 M\u00e4nnchen / EEF"
},
{
"lang": "en",
"type": "remediation reviewer",
"value": "Eric Meadows-J\u00f6nsson / 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.\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"
}
],
"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": {
"dateUpdated": "2026-05-27T15:40:33.166Z",
"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"shortName": "EEF"
},
"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"
}
}
},
"cveMetadata": {
"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"assignerShortName": "EEF",
"cveId": "CVE-2026-21619",
"datePublished": "2026-02-27T17:57:11.513Z",
"dateReserved": "2026-01-01T03:46:45.933Z",
"dateUpdated": "2026-05-27T15:40:33.166Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}