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.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-21619US | high7.5 | — | ||
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 m… | ||||
references
External citations — patches, advisories, analysis.
- https://cna.erlef.org/cves/CVE-2026-21619.htmlWEB
- https://github.com/erlang/rebar3/commit/1d4478f527e373de0b225951e53115450e0d9b9dFIX
- https://github.com/hexpm/hex/commit/636739f3322514e9303ca335fb630696fcbb3c95FIX
- https://github.com/hexpm/hex_core/commit/cdf726095bca85ad2549d146df1e831ae93c2b13FIX
- https://github.com/hexpm/hex_core/security/advisories/GHSA-hx9w-f2w9-9g96ADVISORY
- https://hex.pm/packages/hex_corePACKAGE
Advisories like this name the exposed products attackers go after on your perimeter. See what is exposed on your perimeter with a free passive scan.
Free scan