Is CVE-2026-30226 actively exploited?

No active exploitation of CVE-2026-30226 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-30226 be exploited remotely?

Yes. CVE-2026-30226 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-30226?

CVE-2026-30226 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2026-30226

HIGH

CVE-2026-30226

CWE-1321Published: March 11, 2026· Updated: Mar 17, 2026

7.5

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:13.0th

Official Description

Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. In devalue v5.6.3 and earlier, devalue.parse and devalue.unflatten were susceptible to prototype pollution via maliciously crafted payloads. Successful exploitation could lead to Denial of Service (DoS) or type confusion. This vulnerability is fixed in 5.6.4.

NVD Source

Technical Analysis

CVE-2026-30226 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.