CVE-2026-84994

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Source
https://cve.org/CVERecord?id=CVE-2026-84994
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-84994.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-84994
Aliases
  • GHSA-x586-xvc8-g7q6
Published
2026-10-13T19:00:53Z
Modified
2026-10-15T02:47:30Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Qwik: Crashing any Qwik Server via Resource thenable
Details

Qwik is a performance-focused JavaScript framework. Prior to @builder.io/qwik 1.20.0 and @qwik.dev/core 2.0.0-beta.37, default server-side qwik-json deserialization causes ResourceSerializer.$fill$ to pass resource._resolved to Promise.resolve without first rejecting attacker-controlled thenables. An unauthenticated request can provide a plain object whose then property is a QRL for an unregistered symbol, causing an orphaned asynchronous rejection that terminates Node.js under its default unhandled-rejection policy. A single request can crash a server, and repeated requests can keep replicas unavailable. This issue is fixed in @builder.io/qwik 1.20.0 and @qwik.dev/core 2.0.0-beta.37.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-248"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84994.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "fixed":  "2.0.0-beta37"
                }
            ],
            "source":  "AFFECTED_FIELD"
        }
    ]
}
References

Affected packages

Git / github.com/qwikdev/qwik

Affected ranges

Type
GIT
Repo
https://github.com/qwikdev/qwik
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
c1e7444402f9592b5cf9096e10bf303ab4640511
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "1.20.0"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

@builder.*
@builder.io/qwik-city@1.10.0
@builder.io/qwik-city@1.14.0
@builder.io/qwik-city@1.14.1
@builder.io/qwik-city@1.16.1
@builder.io/qwik-city@1.7.1
@builder.io/qwik-city@1.7.3
@builder.io/qwik-city@1.8.0
@builder.io/qwik-city@1.9.0
@builder.io/qwik-city@1.9.1
@builder.io/qwik-labs@0.0.1
@builder.io/qwik@1.10.0
@builder.io/qwik@1.14.0
@builder.io/qwik@1.14.1
@builder.io/qwik@1.16.1
@builder.io/qwik@1.7.3
@builder.io/qwik@1.8.0
@builder.io/qwik@1.9.0
@builder.io/qwik@1.9.1
@qwikdev/just-for-checking-changesets@0.*
@qwikdev/just-for-checking-changesets@0.0.2
create-qwik@1.*
create-qwik@1.10.0
create-qwik@1.14.0
create-qwik@1.14.1
create-qwik@1.16.1
create-qwik@1.7.2
create-qwik@1.7.3
create-qwik@1.8.0
create-qwik@1.9.0
create-qwik@1.9.1
eslint-plugin-qwik@1.*
eslint-plugin-qwik@1.10.0
eslint-plugin-qwik@1.14.0
eslint-plugin-qwik@1.14.1
eslint-plugin-qwik@1.7.2
eslint-plugin-qwik@1.7.3
eslint-plugin-qwik@1.8.0
eslint-plugin-qwik@1.9.0
eslint-plugin-qwik@1.9.1
insights@0.*
insights@0.1.0
qwik-docs@0.*
qwik-docs@0.0.1
qwik-monorepo@1.*
qwik-monorepo@1.7.1
qwik-monorepo@1.7.2
v0.*
v0.0.100
v0.0.101
v0.0.102
v0.0.103
v0.0.104
v0.0.105
v0.0.106
v0.0.107
v0.0.108
v0.0.109
v0.0.11
v0.0.110
v0.0.112
v0.0.113
v0.0.12-0
v0.0.12-pre.1
v0.0.13
v0.0.14
v0.0.14-0
v0.0.14-2
v0.0.14-4
v0.0.15
v0.0.16
v0.0.16-0
v0.0.16-1
v0.0.16-10
v0.0.16-12
v0.0.16-13
v0.0.16-2
v0.0.16-4
v0.0.16-5
v0.0.16-6
v0.0.16-7
v0.0.16-8
v0.0.16-9
v0.0.18
v0.0.18-0
v0.0.18-1
v0.0.18-2
v0.0.18-3
v0.0.18-4
v0.0.18-5
v0.0.18-6
v0.0.18-7
v0.0.19
v0.0.19-0
v0.0.19-1
v0.0.19-2
v0.0.20
v0.0.20-0
v0.0.20-1
v0.0.20-2
v0.0.20-3
v0.0.20-4
v0.0.20-5
v0.0.20-7
v0.0.20-8
v0.0.21
v0.0.21-0
v0.0.22
v0.0.23
v0.0.24
v0.0.25
v0.0.26
v0.0.27
v0.0.28
v0.0.29
v0.0.30
v0.0.31
v0.0.32
v0.0.33
v0.0.34
v0.0.35
v0.0.36
v0.0.37
v0.0.38
v0.0.39
v0.0.40
v0.0.41
v0.0.42
v0.10.0
v0.100.0
v0.101.0
v0.102.0
v0.103.0
v0.104.0
v0.105.0
v0.106.0
v0.107.0
v0.11.0
v0.11.1
v0.12.0
v0.12.1
v0.13.0
v0.13.1
v0.13.2
v0.13.3
v0.14.0
v0.14.1
v0.15.0
v0.15.1
v0.15.2
v0.16.0
v0.16.1
v0.16.2
v0.17.0
v0.17.1
v0.17.2
v0.17.3
v0.17.4
v0.17.5
v0.18.0
v0.18.1
v0.19.0
v0.19.1
v0.19.2
v0.20.0
v0.20.1
v0.21.0
v0.22.0
v0.22.1
v0.23.0
v0.24.0
v0.25.0
v0.9.0
v1.*
v1.0.0
v1.1.0
v1.1.1
v1.1.2
v1.1.3
v1.1.4
v1.1.5
v1.2.0
v1.2.1
v1.2.10
v1.2.11
v1.2.12
v1.2.13
v1.2.14
v1.2.15
v1.2.16
v1.2.17
v1.2.18
v1.2.19
v1.2.2
v1.2.3
v1.2.4
v1.2.5
v1.2.6
v1.2.7
v1.2.8
v1.2.9
v1.3.0
v1.3.1
v1.3.2
v1.3.3
v1.3.4
v1.3.5
v1.4.0
v1.4.1
v1.4.2
v1.4.3
v1.4.4
v1.4.5
v1.5.0
v1.5.1
v1.5.2
v1.5.3
v1.5.4
v1.5.5
v1.5.6
v1.5.7
v1.6.0
v1.7.0
v1.7.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-84994.json"