CVE-2026-21619Uncontrolled 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 Obje…
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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.
- CVSS
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-400, CWE-502
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
erlang rebar3 erlang:rebar3 | from 3.9.1 before 3.27.0 | NVD |
hex hex hex:hex | from 2.3.0 before 2.3.2 | NVD |
hex hex_core hex:hex_core | from 0.1.0 before 0.12.1 | NVD |
References
- https://cna.erlef.org/cves/CVE-2026-21619.html
- https://github.com/erlang/rebar3/commit/1d4478f527e373de0b225951e53115450e0d9b9dpatch
- https://github.com/hexpm/hex/commit/636739f3322514e9303ca335fb630696fcbb3c95patch
- https://github.com/hexpm/hex_core/commit/cdf726095bca85ad2549d146df1e831ae93c2b13patch
- https://github.com/hexpm/hex_core/security/advisories/GHSA-hx9w-f2w9-9g96mitigation, vendor-advisory
- https://osv.dev/vulnerability/EEF-CVE-2026-21619
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.