How severe is GHSA-8qm3-746x-r74r?

No CVSS score has been assigned to GHSA-8qm3-746x-r74r yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-8qm3-746x-r74r?

GHSA-8qm3-746x-r74r affects the following packages: devalue (npm). Ecosystems affected: npm.

How do I fix GHSA-8qm3-746x-r74r?

Update devalue to 5.6.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-8qm3-746x-r74r is resolved across your whole dependency graph.

How do I detect GHSA-8qm3-746x-r74r in my npm dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for devalue, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate GHSA-8qm3-746x-r74r if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is GHSA-8qm3-746x-r74r actively exploited in the wild?

No public exploit code has been indexed for GHSA-8qm3-746x-r74r yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

When was GHSA-8qm3-746x-r74r published, and has it been updated?

GHSA-8qm3-746x-r74r was published on February 19, 2026 and was last updated on February 22, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

📦 npm

Not in CISA KEV

devalue `uneval`ed code can create objects with polluted prototypes when `eval`edGHSA-8qm3-746x-r74r

Fix: sveltejs/devalue@0f04d4d

GHSA-8qm3-746x-r74r is a security vulnerability in devalue. A fix is available for devalue — see the affected versions and patch details below.

Published

Feb 19, 2026

Updated

Feb 22, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Feb 22, 2026 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

399other npm packages depend on this — each one inherits the vulnerability until it's patched upstream

devaluenpm

25.8Mdownloads / week

Description

Under certain circumstances, unevaling untrusted data can produce output code that will create objects with polluted prototypes when later evaled, meaning the output data can be a different shape from the input data.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`devalue`	all versions	5.6.3`npm install devalue@5.6.3`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for devalue, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update devalue to 5.6.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-8qm3-746x-r74r is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

Under certain circumstances, `uneval`ing untrusted data can produce output code that will create objects with polluted prototypes when later `eval`ed, meaning the output data can be a different shape from the input data.

O3 Security · Impact-Aware SCA

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