GHSA-33hq-fvwr-56pm

Source

https://github.com/advisories/GHSA-33hq-fvwr-56pm

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-33hq-fvwr-56pm/GHSA-33hq-fvwr-56pm.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-33hq-fvwr-56pm

Published

2026-02-19T20:29:30Z

Modified

2026-02-22T23:20:56.552579Z

Severity

1.7 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U CVSS Calculator

Summary

devalue affected by CPU and memory amplification from sparse arrays

Details

Under certain circumstances, serializing sparse arrays using uneval or stringify could cause CPU and/or memory exhaustion. When this occurs on the server, it results in a DoS. This is extremely difficult to take advantage of in practice, as an attacker would have to manage to create a sparse array on the server — which is impossible in every mainstream wire format — and then that sparse array would have to be run through uneval or stringify.

Database specific

{
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-19T20:29:30Z",
    "cwe_ids": [
        "CWE-770"
    ],
    "severity": "LOW",
    "nvd_published_at": null
}

References

Affected packages

npm / devalue

Package

Name: devalue; View open source insights on deps.dev
Purl: pkg:npm/devalue

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.6.3

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-33hq-fvwr-56pm/GHSA-33hq-fvwr-56pm.json"

last_known_affected_version_range

"<= 5.6.2"