What is CVE-2023-30363?

CVE-2023-30363 is a critical-severity vulnerability in Tencent Vconsole, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 9.8/10. Published 2023-04-26.

How severe is CVE-2023-30363?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Prototype Pollution in Tencent Vconsole

CVE-2023-30363

vConsole v3.15.0 was discovered to contain a prototype pollution due to incorrect key and value resolution in setOptions in core.ts.

Vulnerability class: Prototype Pollution

Published 2023-04-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (60.2th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Tencent Vconsole — versions 3.15.0

Weakness classification (CWE)

CWE-1321 — Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution)

References

cwe.mitre.org/data/definitions/1321.html (Technical Description)
github.com/Tencent/vConsole/issues/616 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2023-30363?: CVE-2023-30363 is a critical-severity vulnerability in Tencent Vconsole, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 9.8/10. Published 2023-04-26.
How severe is CVE-2023-30363?: Critical severity. CVSS v3 base score is 9.8 out of 10.