CVE-2026-22775 | devalue vulnerable to denial of service due to memory/CPU exhaustion in devalue.parse

Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. From 5.1.0 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 ArrayBuffer hydration expecting base64 encoded strings as input, but not checking the assumption before decoding the input. This vulnerability is fixed in 5.6.2.

Published: 2026-01-15 Last update: 2026-01-20 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-22775 is rated Low Risk (31.5/100): CVSS High severity, with low exploitation likelihood (EPSS 0.02%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-22775

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-02-18 0.05% 0.02% -0.03%
2 2026-01-21 0.04% 0.05% +0.01%
3 2026-01-16 — 0.04% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-22775

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]

Weakness enumeration for CVE-2026-22775

GitHub Security Advisory for CVE-2026-22775

GHSA-g2pg-6438-jwpf · Severity: high · Ecosystem: npm — devalue vulnerable to denial of service due to memory/CPU exhaustion in devalue.parse

OS Trackers for CVE-2026-22775

vendor priority summary link
redhat high — https://access.redhat.com/security/cve/CVE-2026-22775
suse medium CVE-2026-22775 severity moderate: SUSE including 4 source package names (pgadmin4, pgadmin4-doc, pgadmin4-web, system-user-pgadmin), 40 product×package rows across 13 product lines (SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS, SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS, … (13 product lines)): Known Not Affected 40. https://www.suse.com/security/cve/CVE-2026-22775/

Affected software / configurations for CVE-2026-22775

Vendor Product Version Raw CPE
svelte devalue >= 5.1.0, < 5.6.2 cpe:2.3:a:svelte:devalue:*:*:*:*:*:node.js:*:*

References for CVE-2026-22775

cvelogic Threat Intelligence