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CVE-2026-21619

HIGH

7.5

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published2/27/2026

Last Modified4/6/2026

Sourcenvd

Honeypot Sightings0

Affected Products

erlang:rebar3hex:hexhex:hex_core

Weaknesses (CWE)

CWE-400CWE-502

References

https://cna.erlef.org/cves/CVE-2026-21619.html(6b3ad84c-e1a6-4bf7-a703-f496b71e49db)

https://github.com/erlang/rebar3/commit/1d4478f527e373de0b225951e53115450e0d9b9d(6b3ad84c-e1a6-4bf7-a703-f496b71e49db)

https://github.com/hexpm/hex/commit/636739f3322514e9303ca335fb630696fcbb3c95(6b3ad84c-e1a6-4bf7-a703-f496b71e49db)

https://github.com/hexpm/hex_core/commit/cdf726095bca85ad2549d146df1e831ae93c2b13(6b3ad84c-e1a6-4bf7-a703-f496b71e49db)

https://github.com/hexpm/hex_core/security/advisories/GHSA-hx9w-f2w9-9g96(6b3ad84c-e1a6-4bf7-a703-f496b71e49db)

https://osv.dev/vulnerability/EEF-CVE-2026-21619(6b3ad84c-e1a6-4bf7-a703-f496b71e49db)

IOC Correlations

No correlations recorded

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