CVE catalog
CVE-2026-21619
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 Objec
- Severity
- Medium · CVSS 4.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.64% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | rebar3 | sid | 3.28.0-1 | fixed |
| Debian | rebar3 | forky | 3.27.3-1 | fixed |
| Debian | rebar3 | trixie | 3.24.0-1 | vulnerable |
| Debian | rebar3 | bookworm | 3.19.0-1 | vulnerable |
| Erlang | hex_core | Not reported | 0.12.1 | fixed |
| Cpe | rebar3 | Not reported | Not reported | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | rebar3 | source | sid | 3.27.0-1 | not yet assigned | Not reported | Not reported |
| Debian | rebar3 | source | forky | 3.27.0-1 | not yet assigned | Not reported | Not reported |
| Debian | rebar3 | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | rebar3 | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
| Erlang | hex_core | erlang | Not reported | 0.12.1 | Not reported | Not reported | Not reported |
Notes
[trixie] rebar3: Minor issue [bookworm] rebar3: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [rebar3]Affected
Details (2)
3.19.0-1· all · bookwormAffected
nvd · rebar3 · debian · bookworm; nvd · rebar3 · debian · 12
3.19.0-1· all · bookwormAffected
nvd · rebar3 · debian · bookworm; nvd · rebar3 · debian · 12
[Debian 13 (Trixie)]
- [erlang-hex]Affected
Details (2)
2.0.6-2· amd64 · trixieAffected
nvd · erlang-hex · debian · 13
2.0.6-2· arm64 · trixieAffected
nvd · erlang-hex · debian · 13
- [rebar3]Affected
Details (2)
3.24.0-1· all · trixieAffected
nvd · rebar3 · debian · 13
3.24.0-1· all · trixieAffected
nvd · rebar3 · debian · 13
Observed:
References
- [https://github.com/advisories/GHSA-hx9w-f2w9-9g96]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-21619]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-21619]
- [https://security-tracker.debian.org/tracker/CVE-2026-21619]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-21619.json]
[Debian Security Tracker] · [FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]