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.
CVE-2026-22775
This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6%, top 56% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EG Risk
- 49(Track)EG Risk 49/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity75% × 45%Exploitation1% × 40%Automatability100% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 1%
- EPSS %ILE
- 44%
- KEV
- Not listed
Published
January 15, 2026
Last Modified
July 15, 2026
Advisory Details (8)
Auto-updated Jul 2, 20262430109 – (CVE-2026-22775) CVE-2026-22775 devalue: devalue: Denial of Service due to improper input validation
https://bugzilla.redhat.com/show_bug.cgi?id=2430109Denial of service due to memory/CPU exhaustion in devalue.parse · Advisory · sveltejs/devalue · GitHub
https://github.com/sveltejs/devalue/security/advisories/GHSA-g2pg-6438-jwpfv5.6.2
Patch available: sveltejs/devalue v5.6.2
https://github.com/sveltejs/devalue/releases/tag/v5.6.2commit 11755849fa06 (sveltejs/devalue)
Patch available: sveltejs/devalue v5.6.2 (contains commit 11755849fa06)
https://github.com/sveltejs/devalue/commit/11755849fa0634ae294a15ec0aef2f43efcad7c4Vendor Advisories for CVE-2026-22775(2)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(2)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| redhat | rhtas/rekor-search-ui-rhel9:sha256:1e3a46ade52215e2c78df9229f36301c94099e8397ee74ab99fb8bd504ce7aa2 | 2026-02-18 | redhat |
| redhat | rhtas/rekor-search-ui-rhel9:sha256:3971738912069448174202486b61ed384153ca18af3e8430a55795a6e65eb58d | 2026-02-05 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| devalue | — | 5.6.2 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 13× in last 7d / 52× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 105 total refreshes for this CVE.
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Frequently asked(5)
What is CVE-2026-22775?
When was CVE-2026-22775 disclosed?
Is CVE-2026-22775 actively exploited?
What is the CVSS score of CVE-2026-22775?
How do I remediate CVE-2026-22775?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-22775
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