CVE-2026-21619

HIGH

hex_core < 0.12.1, hex < 2.3.2, rebar3 < 3.27.0 - Resource Consumption & Untrusted Data Deserialization

Title source: llm
STIX 2.1

Description

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.

References (6)

Core 6

Scores

CVSS v3 7.5
EPSS 0.0058
EPSS Percentile 42.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-400 CWE-502
Status published
Products (9)
erlang/rebar3 209c02ec57c2cc3207ee0174c3af3675b8dc8f79 - 1d4478f527e373de0b225951e53115450e0d9b9d
erlang/rebar3 3.9.1 - 3.27.0 (2 CPE variants)
hex/hex 2.3.0 - 2.3.2
Hex/hex_core 0 - 0.12.1Hex
hex/hex_core 0.1.0 - 0.12.1
hexpm/hex 2.3.0 - 2.3.2
hexpm/hex 314546ac432229518714cc8e3336e916b9da6305 - 636739f3322514e9303ca335fb630696fcbb3c95
hexpm/hex_core 0.1.0 - 0.12.1
hexpm/hex_core eb327f8edfe45507351e38cc0805aa12fa647f0b - cdf726095bca85ad2549d146df1e831ae93c2b13
Published Feb 27, 2026
Tracked Since Feb 28, 2026