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4 vulnerabilities found for hex by hexpm
CVE-2026-32148 (GCVE-0-2026-32148)
Vulnerability from nvd – Published: 2026-04-30 18:17 – Updated: 2026-05-01 04:33
VLAI
Title
Lockfile checksums not verified in Hex allows dependency integrity bypass
Summary
Insufficient Verification of Data Authenticity vulnerability in hexpm hex (Hex.RemoteConverger module) allows dependency integrity bypass via unverified lockfile checksums.
Hex stores checksums for dependencies in the mix.lock file to ensure reproducible and integrity-checked builds. However, Hex.RemoteConverger.verify_resolved/2 never executes checksum verification because the lock data returned by Hex.Utils.lock/1 uses string-based dependency names, while the verification logic compares against atom-based names. This type mismatch causes the verification code path to be silently skipped. Checksums are still validated when packages are initially downloaded from the registry, but mismatches between the lockfile and resolved dependencies are not detected.
An attacker who can influence cached packages (e.g., via local cache poisoning or a compromised registry) can provide modified dependency contents that will be accepted without detection. The mix.lock file is silently rewritten with the checksum values from the registry, erasing evidence of tampering.
This issue affects hex: from 0.16.0 before 2.4.2.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/hexpm/hex/security/advisories/… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-32148.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-32148 | related |
| https://github.com/hexpm/hex/commit/d7528c8199a11… | patch |
Impacted products
Credits
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CVE-2026-21619 (GCVE-0-2026-21619)
Vulnerability from nvd – Published: 2026-02-27 17:57 – Updated: 2026-05-27 15:40
VLAI
Title
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
6 references
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| hexpm | hex_core |
Affected:
eb327f8edfe45507351e38cc0805aa12fa647f0b , < cdf726095bca85ad2549d146df1e831ae93c2b13
(git)
cpe:2.3:a:hexpm:hex_core:*:*:*:*:*:*:*:* |
|
| hexpm | hex_core |
Affected:
0.1.0 , < 0.12.1
(semver)
cpe:2.3:a:hexpm:hex_core:*:*:*:*:*:*:*:* |
|
| hexpm | hex |
Affected:
314546ac432229518714cc8e3336e916b9da6305 , < 636739f3322514e9303ca335fb630696fcbb3c95
(git)
cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:* |
|
| hexpm | hex |
Affected:
2.3.0 , < 2.3.2
(semver)
cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:* |
|
| erlang | rebar3 |
Affected:
209c02ec57c2cc3207ee0174c3af3675b8dc8f79 , < 1d4478f527e373de0b225951e53115450e0d9b9d
(git)
cpe:2.3:a:erlang:rebar3:*:*:*:*:*:*:*:* |
|
| erlang | rebar3 |
Affected:
3.9.1 , < 3.27.0
(semver)
cpe:2.3:a:erlang:rebar3:*:*:*:*:*:*:*:* |
Credits
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CVE-2026-32148 (GCVE-0-2026-32148)
Vulnerability from cvelistv5 – Published: 2026-04-30 18:17 – Updated: 2026-05-01 04:33
VLAI
Title
Lockfile checksums not verified in Hex allows dependency integrity bypass
Summary
Insufficient Verification of Data Authenticity vulnerability in hexpm hex (Hex.RemoteConverger module) allows dependency integrity bypass via unverified lockfile checksums.
Hex stores checksums for dependencies in the mix.lock file to ensure reproducible and integrity-checked builds. However, Hex.RemoteConverger.verify_resolved/2 never executes checksum verification because the lock data returned by Hex.Utils.lock/1 uses string-based dependency names, while the verification logic compares against atom-based names. This type mismatch causes the verification code path to be silently skipped. Checksums are still validated when packages are initially downloaded from the registry, but mismatches between the lockfile and resolved dependencies are not detected.
An attacker who can influence cached packages (e.g., via local cache poisoning or a compromised registry) can provide modified dependency contents that will be accepted without detection. The mix.lock file is silently rewritten with the checksum values from the registry, erasing evidence of tampering.
This issue affects hex: from 0.16.0 before 2.4.2.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/hexpm/hex/security/advisories/… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-32148.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-32148 | related |
| https://github.com/hexpm/hex/commit/d7528c8199a11… | patch |
Impacted products
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CVE-2026-21619 (GCVE-0-2026-21619)
Vulnerability from cvelistv5 – Published: 2026-02-27 17:57 – Updated: 2026-05-27 15:40
VLAI
Title
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
6 references
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| hexpm | hex_core |
Affected:
eb327f8edfe45507351e38cc0805aa12fa647f0b , < cdf726095bca85ad2549d146df1e831ae93c2b13
(git)
cpe:2.3:a:hexpm:hex_core:*:*:*:*:*:*:*:* |
|
| hexpm | hex_core |
Affected:
0.1.0 , < 0.12.1
(semver)
cpe:2.3:a:hexpm:hex_core:*:*:*:*:*:*:*:* |
|
| hexpm | hex |
Affected:
314546ac432229518714cc8e3336e916b9da6305 , < 636739f3322514e9303ca335fb630696fcbb3c95
(git)
cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:* |
|
| hexpm | hex |
Affected:
2.3.0 , < 2.3.2
(semver)
cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:* |
|
| erlang | rebar3 |
Affected:
209c02ec57c2cc3207ee0174c3af3675b8dc8f79 , < 1d4478f527e373de0b225951e53115450e0d9b9d
(git)
cpe:2.3:a:erlang:rebar3:*:*:*:*:*:*:*:* |
|
| erlang | rebar3 |
Affected:
3.9.1 , < 3.27.0
(semver)
cpe:2.3:a:erlang:rebar3:*:*:*:*:*:*:*:* |
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"value": "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.\u003cp\u003e This vulnerability is associated with program files \u003ctt\u003esrc/hex_api.erl\u003c/tt\u003e, \u003ctt\u003esrc/mix_hex_api.erl\u003c/tt\u003e, \u003ctt\u003eapps/rebar/src/vendored/r3_hex_api.erl\u003c/tt\u003e and program routines \u003ctt\u003ehex_core:request/4\u003c/tt\u003e, \u003ctt\u003emix_hex_api:request/4\u003c/tt\u003e, \u003ctt\u003er3_hex_api:request/4\u003c/tt\u003e.\u003c/p\u003e\u003cp\u003eThis 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.\u003c/p\u003e"
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