CVE-2026-22774
Devalue is vulnerable to denial of service due to memory exhaustion in devalue.parse
Description
## Summary 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. ## Details The parser's typed array hydration logic does not properly validate input before processing. Specially crafted inputs can cause disproportionate memory allocation or CPU usage on the receiving system. ## Impact This is a denial of service vulnerability affecting systems that use `devalue.parse` to handle data from potentially untrusted sources. Affected systems should upgrade to patched versions immediately.
How to fix CVE-2026-22774
To remediate CVE-2026-22774, upgrade the affected package to a fixed version below.
- —upgrade to 5.6.2 or later
Is CVE-2026-22774 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 5.3.0, < 5.6.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |