High severity7.5NVD Advisory· Published Feb 27, 2026· Updated Apr 6, 2026
CVE-2026-21619
CVE-2026-21619
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
hex_coreHex | < 0.12.1 | 0.12.1 |
Affected products
4Patches
Vulnerability mechanics
References
8- github.com/erlang/rebar3/commit/1d4478f527e373de0b225951e53115450e0d9b9dnvdPatchWEB
- github.com/hexpm/hex/commit/636739f3322514e9303ca335fb630696fcbb3c95nvdPatchWEB
- github.com/hexpm/hex_core/commit/cdf726095bca85ad2549d146df1e831ae93c2b13nvdPatchWEB
- github.com/advisories/GHSA-hx9w-f2w9-9g96ghsaADVISORY
- github.com/hexpm/hex_core/security/advisories/GHSA-hx9w-f2w9-9g96nvdMitigationVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-21619ghsaADVISORY
- cna.erlef.org/cves/CVE-2026-21619.htmlnvdWEB
- osv.dev/vulnerability/EEF-CVE-2026-21619nvdWEB
News mentions
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