CVE-2026-21619

low

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

https://github.com/hexpm/hex_core/security/advisories/GHSA-hx9w-f2w9-9g96

https://github.com/hexpm/hex_core/commit/cdf726095bca85ad2549d146df1e831ae93c2b13

https://github.com/hexpm/hex/commit/636739f3322514e9303ca335fb630696fcbb3c95

https://github.com/erlang/rebar3/commit/1d4478f527e373de0b225951e53115450e0d9b9d

Details

Source: Mitre, NVD

Published: 2026-02-27

Updated: 2026-03-02

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High

CVSS v4

Base Score: 2

Vector: 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

Severity: Low

EPSS

EPSS: 0.00016