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Fencer Vulns
high 7.5

CVE-2026-22774 json

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

published 2026-01-15 9 mo ago modified 2026-07-15 3 mo ago also GHSA-vw5p-8cq8-m7mv , EUVD-2026-2790

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 50%
public exploits
0
none known

Summary

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.

Patch / fix

  • npm devalue 5.6.2
  • Red Hat Red Hat Trusted Artifact Signer 1.2 1770739056
  • Red Hat Red Hat Trusted Artifact Signer 1.3 1770107452

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-22774 updated cvss 7.5

devalue: devalue: Denial of Service due to excessive resource consumption from untrusted input

  • Red Hat Build of Podman Desktop - Tech Preview rhdesktop/rh-podman-desktop-ext-bootc-rhel10
    affected: no fix available
  • Red Hat Trusted Artifact Signer 1.2 rhtas 1770739056
    fixed: vendor fix RHSA-2026:2926
  • Red Hat Trusted Artifact Signer 1.3 rhtas 1770107452
    fixed: vendor fix RHSA-2026:2144
  • Red Hat Trusted Artifact Signer 1.2 rhtas 1770734118, rhtas 1770734418, rhtas 1770738094, rhtas 1770738273, rhtas 1770738512 Red Hat Trusted Artifact Signer 1.3 rhtas 1770106156, rhtas 1770106163, rhtas 1770107440, rhtas 1770107446, rhtas 1770107577
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
9 mo ago

Exploit prediction

0.63% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
npm devalue
>=5.3.0, <5.6.2
5.6.2

Affected products

  • sveltejs devalue
  • Red Hat Red Hat Trusted Artifact Signer 1.2
  • Red Hat Red Hat Trusted Artifact Signer 1.3
  • Red Hat Red Hat Build of Podman Desktop - Tech Preview

Classification

Weakness
  • CWE-405 Asymmetric Resource Consumption (Amplification)
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.