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.
{
"cna_assigner": "EEF",
"cwe_ids": [
"CWE-400",
"CWE-502"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/21xxx/CVE-2026-21619.json",
"unresolved_ranges": [
{
"extracted_events": [
{
"introduced": "eb327f8edfe45507351e38cc0805aa12fa647f0b"
},
{
"fixed": "cdf726095bca85ad2549d146df1e831ae93c2b13"
},
{
"introduced": "314546ac432229518714cc8e3336e916b9da6305"
},
{
"fixed": "636739f3322514e9303ca335fb630696fcbb3c95"
},
{
"introduced": "209c02ec57c2cc3207ee0174c3af3675b8dc8f79"
},
{
"fixed": "1d4478f527e373de0b225951e53115450e0d9b9d"
}
],
"source": "AFFECTED_FIELD"
}
]
}{
"cpe": "cpe:2.3:a:erlang:rebar3:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "3.9.1"
},
{
"fixed": "3.27.0"
}
],
"source": [
"CPE_RANGE",
"REFERENCES"
]
}