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CVE

EEF-CVE-2026-21619

Unsafe Deserialization of Erlang Terms in hex_core
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CVE

EEF-CVE-2026-21619

Unsafe Deserialization of Erlang Terms in hex_core

Uncontrolled Resource Consumption, Deserialization of Untrusted Data vulnerability in hexpm hexcore (hexapi modules), hexpm hex (mixhexapi modules), erlang rebar3 (r3hexapi modules) allows Object Injection, Excessive Allocation. This vulnerability is associated with program files src/hexapi.erl, src/mixhexapi.erl, apps/rebar/src/vendored/r3hexapi.erl and program routines hexcore:request/4, mixhexapi:request/4, r3hexapi: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.

Package Versions Affected

Package Version
patch Availability
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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
2
-
4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/hexpm/hexcore/security/advisories/GHSA-hx9w-f2w9-9g96, https://cna.erlef.org/cves/CVE-2026-21619.html, https://github.com/hexpm/hexcore/commit/cdf726095bca85ad2549d146df1e831ae93c2b13, https://github.com/hexpm/hex/commit/636739f3322514e9303ca335fb630696fcbb3c95, https://github.com/erlang/rebar3/commit/1d4478f527e373de0b225951e53115450e0d9b9d, https://hex.pm/packages/hex_core

Severity

7.5

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.5
EPSS Probability
0.00068%
EPSS Percentile
0.20767%
Introduced Version
0.1.0,eb327f8edfe45507351e38cc0805aa12fa647f0b,314546ac432229518714cc8e3336e916b9da6305,209c02ec57c2cc3207ee0174c3af3675b8dc8f79
Fix Available
0.12.1,cdf726095bca85ad2549d146df1e831ae93c2b13,636739f3322514e9303ca335fb630696fcbb3c95,1d4478f527e373de0b225951e53115450e0d9b9d

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