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.
References
| Link | Resource |
|---|---|
| https://cna.erlef.org/cves/CVE-2026-32148.html | Third Party Advisory |
| https://github.com/hexpm/hex/commit/d7528c8199a1144511508bf3a6460026a5a14c8e | Patch |
| https://github.com/hexpm/hex/security/advisories/GHSA-hmv9-4mfr-m92v | Exploit Patch Vendor Advisory |
| https://osv.dev/vulnerability/EEF-CVE-2026-32148 | Exploit Third Party Advisory |
| https://github.com/hexpm/hex/security/advisories/GHSA-hmv9-4mfr-m92v | Exploit Patch Vendor Advisory |
Configurations
History
05 May 2026, 02:16
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Hex hex
Hex |
|
| CPE | cpe:2.3:a:hex:hex:*:*:*:*:*:*:*:* | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.9 |
| References | () https://cna.erlef.org/cves/CVE-2026-32148.html - Third Party Advisory | |
| References | () https://github.com/hexpm/hex/commit/d7528c8199a1144511508bf3a6460026a5a14c8e - Patch | |
| References | () https://github.com/hexpm/hex/security/advisories/GHSA-hmv9-4mfr-m92v - Exploit, Patch, Vendor Advisory | |
| References | () https://osv.dev/vulnerability/EEF-CVE-2026-32148 - Exploit, Third Party Advisory |
30 Apr 2026, 20:16
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/hexpm/hex/security/advisories/GHSA-hmv9-4mfr-m92v - |
30 Apr 2026, 19:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-04-30 19:16
Updated : 2026-05-05 02:16
NVD link : CVE-2026-32148
Mitre link : CVE-2026-32148
CVE.ORG link : CVE-2026-32148
JSON object : View
Products Affected
hex
- hex