CVE-2026-21619

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Source
https://cve.org/CVERecord?id=CVE-2026-21619
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-21619.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-21619
Aliases
Downstream
Published
2026-02-27T17:57:11Z
Modified
2026-09-30T03:49:23Z
Severity
  • 2.0 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
Unsafe Deserialization of Erlang Terms in hex_core
Details

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.

Database specific 
{
    "cna_assigner": "EEF",
    "cwe_ids": [
        "CWE-400",
        "CWE-502"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/21xxx/CVE-2026-21619.json"
}
References

Affected packages

Git / github.com/erlang/rebar3

Affected ranges

Type
GIT
Repo
https://github.com/erlang/rebar3
Events
Introduced
df53ad18ff5330660bd102d3a4071cb0962c8dda
Fixed
619df55d9dab109cbd1b5d9ed1d45c93f5450e24
Fixed
1d4478f527e373de0b225951e53115450e0d9b9d
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:erlang:rebar3:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "3.9.1"
        },
        {
            "fixed": "3.27.0"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}
Type
GIT
Repo
https://github.com/hexpm/hex
Events
Introduced
62c88751feefc7a27b14b99f7fa405a48daf2521
Fixed
520a3838751eefcb27900ba67fddd1864c055a81
Fixed
636739f3322514e9303ca335fb630696fcbb3c95
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:hex:hex:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "2.3.0"
        },
        {
            "fixed": "2.3.2"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}
Type
GIT
Repo
https://github.com/hexpm/hex_core
Events
Introduced
a2c868584104380dcd0d712594417f92179285e8
Fixed
0573013a21a676fb85a0e30db49f81c44ec8f97d
Fixed
cdf726095bca85ad2549d146df1e831ae93c2b13
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:hex:hex_core:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0.1.0"
        },
        {
            "fixed": "0.12.1"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

3.*
3.11.0
3.11.1
3.12.0
3.13.0
3.14.0
3.14.0-rc1
3.14.0-rc2
3.14.1
3.14.2
3.14.4
3.15.0
3.15.1
3.16.0
3.16.1
3.17.0
3.18.0
3.19.0
3.20.0
3.21.0
3.22.0
3.22.1
3.23.0
3.24.0
3.25.0
3.25.1
3.26.0
3.9.1
v0.*
v0.1.0
v0.1.1
v0.10.0
v0.10.1
v0.10.2
v0.10.3
v0.11.0
v0.12.0
v0.2.0
v0.2.1
v0.3.0
v0.4.0
v0.5.0
v0.6.0
v0.6.1
v0.6.3
v0.6.4
v0.6.5
v0.6.6
v0.6.7
v0.6.8
v0.6.9
v0.7.0
v0.7.1
v0.8.0
v0.8.1
v0.8.2
v0.8.3
v0.8.4
v0.9.0
v2.*
v2.3.0
v2.3.1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-21619.json"