CVE-2026-22774
devalue vulnerable to denial of service due to memory exhaustion in devalue.parse
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.
INFO
Published Date :
Jan. 15, 2026, 7:16 p.m.
Last Modified :
July 15, 2026, 2:18 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c |
Solution
- Update svelte-devalue to version 5.6.2.
- Avoid parsing untrusted input with devalue.
- Sanitize all external inputs before parsing.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-22774.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-22774 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-22774
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-22774 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-22774 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Jul. 15, 2026
Action Type Old Value New Value Changed Affected [{'cpes': ['cpe:/a:redhat:trusted_artifact_signer:1.2::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Trusted Artifact Signer 1.2', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:trusted_artifact_signer:1.3::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Trusted Artifact Signer 1.3', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:podman_desktop:0'], 'vendor': 'Red Hat', 'product': 'Red Hat Build of Podman Desktop - Tech Preview', 'defaultStatus': 'affected'}] [{'cpes': ['cpe:/a:redhat:trusted_artifact_signer:1.2::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Trusted Artifact Signer 1.2', 'versions': [{'status': 'unaffected', 'version': '1770739056', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhtas/rekor-search-ui-rhel9', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:trusted_artifact_signer:1.3::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Trusted Artifact Signer 1.3', 'versions': [{'status': 'unaffected', 'version': '1770107452', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'rhtas/rekor-search-ui-rhel9', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:podman_desktop:0'], 'vendor': 'Red Hat', 'product': 'Red Hat Build of Podman Desktop - Tech Preview', 'packageName': 'rhdesktop/rh-podman-desktop-ext-bootc-rhel10', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}] -
CVE Modified by 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Jun. 30, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:/a:redhat:trusted_artifact_signer:1.2::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Trusted Artifact Signer 1.2', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:trusted_artifact_signer:1.3::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat Trusted Artifact Signer 1.3', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:podman_desktop:0'], 'vendor': 'Red Hat', 'product': 'Red Hat Build of Podman Desktop - Tech Preview', 'defaultStatus': 'affected'}] Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-405 Added Reference https://access.redhat.com/errata/RHSA-2026:2144 Added Reference https://access.redhat.com/errata/RHSA-2026:2926 Added Reference https://access.redhat.com/security/cve/CVE-2026-22774 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2430095 Added Reference https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-22774.json -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'sveltejs', 'product': 'devalue', 'versions': [{'status': 'affected', 'version': '>= 5.3.0, < 5.6.2'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-22774', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-01-15T19:16:06.462171Z'} -
Initial Analysis by [email protected]
Jan. 20, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:svelte:devalue:*:*:*:*:*:node.js:*:* versions from (including) 5.3.0 up to (excluding) 5.6.2 Added Reference Type GitHub, Inc.: https://github.com/sveltejs/devalue/commit/e46afa64dd2b25aa35fb905ba5d20cea63aabbf7 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/sveltejs/devalue/releases/tag/v5.6.2 Types: Release Notes Added Reference Type GitHub, Inc.: https://github.com/sveltejs/devalue/security/advisories/GHSA-vw5p-8cq8-m7mv Types: Vendor Advisory -
New CVE Received by [email protected]
Jan. 15, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-405 Added Reference https://github.com/sveltejs/devalue/commit/e46afa64dd2b25aa35fb905ba5d20cea63aabbf7 Added Reference https://github.com/sveltejs/devalue/releases/tag/v5.6.2 Added Reference https://github.com/sveltejs/devalue/security/advisories/GHSA-vw5p-8cq8-m7mv