devalue vulnerable to denial of service due to memory exhaustion in devalue.parse

Summary

CVE	CVE-2026-22774
State	PUBLISHED
Assigner	GitHub_M
Source Priority	CVE Program / NVD first with legacy fallback
Published	2026-01-15 19:16:05 UTC
Updated	2026-07-15 02:18:35 UTC
Description	Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. From 5.3.0 to 5.6.1, certain inputs can cause devalue.parse to consume excessive CPU time and/or memory, potentially leading to denial of service in systems that parse input from untrusted sources. This affects applications using devalue.parse on externally-supplied data. The root cause is the typed array hydration expecting an ArrayBuffer as input, but not checking the assumption before creating the typed array. This vulnerability is fixed in 5.6.2.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.005700000 probability, percentile 0.433560000 (date 2026-07-15)

Problem Types: CWE-405 | CWE-405 CWE-405: Asymmetric Resource Consumption (Amplification) | CWE-405 Asymmetric Resource Consumption (Amplification)

Version	Source	Type	Score	Severity	Vector
3.1	ADP	CVSS	7.5	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`
3.1	[email protected]	Secondary	7.5	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`
3.1	0b0ca135-0b70-47e7-9f44-1890c2a1c46c	Secondary	7.5	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`
3.1	CNA	DECLARED	7.5	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`

CVSS v3.1 Breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

Type	Vendor	Product	Version	Update	Edition	Language
Application	Svelte	Devalue	All	All	All	All

Vendor Declared Affected Products

Source	Vendor	Product	Version	Platforms
CNA	Sveltejs	Devalue	affected >= 5.3.0, < 5.6.2	Not specified
ADP	Red Hat	Red Hat Trusted Artifact Signer 1.2	unaffected 1770739056 * rpm	Not specified
ADP	Red Hat	Red Hat Trusted Artifact Signer 1.3	unaffected 1770107452 * rpm	Not specified
ADP	Red Hat	Red Hat Build Of Podman Desktop - Tech Preview	Not specified	Not specified

References

Reference	Source	Link	Tags
github.com/sveltejs/devalue/commit/e46afa64dd2b25aa35fb905ba5d20cea63aabbf7	[email protected]	github.com	Patch
access.redhat.com/errata/RHSA-2026:2926	0b0ca135-0b70-47e7-9f44-1890c2a1c46c	access.redhat.com
bugzilla.redhat.com/show_bug.cgi	0b0ca135-0b70-47e7-9f44-1890c2a1c46c	bugzilla.redhat.com
access.redhat.com/errata/RHSA-2026:2144	0b0ca135-0b70-47e7-9f44-1890c2a1c46c	access.redhat.com
github.com/sveltejs/devalue/releases/tag/v5.6.2	[email protected]	github.com	Release Notes
github.com/sveltejs/devalue/security/advisories/GHSA-vw5p-8cq8-m7mv	[email protected]	github.com	Vendor Advisory
security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-22774.json	0b0ca135-0b70-47e7-9f44-1890c2a1c46c	security.access.redhat.com
access.redhat.com/security/cve/CVE-2026-22774	0b0ca135-0b70-47e7-9f44-1890c2a1c46c	access.redhat.com
CVE Program record	CVE.ORG	www.cve.org	canonical
NVD vulnerability detail	NVD	nvd.nist.gov	canonical, analysis

No vendor comments have been submitted for this CVE.

Additional Advisory Data

Source	Time	Event
ADP	2026-01-15T19:01:29.258Z	Reported to Red Hat.
ADP	2026-01-15T18:53:21.963Z	Made public.

Solutions

ADP: RHSA-2026:2926: Red Hat Trusted Artifact Signer 1.2

ADP: RHSA-2026:2144: Red Hat Trusted Artifact Signer 1.3

There are currently no legacy QID mappings associated with this CVE.