What is CVE-2026-25802?

CVE-2026-25802 is a high-severity vulnerability in Newapi New API, classified under Cross-site Scripting. CVSS score: 7.6/10. Published 2026-02-24.

How severe is CVE-2026-25802?

High severity. CVSS v3 base score is 7.6 out of 10.

XSS in Newapi New API

CVE-2026-25802

New API is a large language mode (LLM) gateway and artificial intelligence (AI) asset management system. Prior to version 0.10.8-alpha.9, a potential unsafe operation occurs in component `MarkdownRenderer.jsx`, allowing for Cross-Site Scripting(XSS) when the model outputs items containing `<script>` tag. Version 0.10.8-alpha.9 fixes the issue.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-02-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:L.

EPSS exploit prediction

EPSS: 0.003 (17.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 17.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

Newapi New API — versions 0.10.8
Quantumnous New-Api — versions < 0.10.8-alpha.9

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/QuantumNous/new-api/security/advisories/GHSA-299v-8pq9-5gjq (Exploit, Vendor Advisory)
github.com/QuantumNous/new-api/commit/ab5456eb1049aa8a0f3e51f359907ec7fff38b4b (Patch)

Frequently asked questions

What is CVE-2026-25802?: CVE-2026-25802 is a high-severity vulnerability in Newapi New API, classified under Cross-site Scripting. CVSS score: 7.6/10. Published 2026-02-24.
How severe is CVE-2026-25802?: High severity. CVSS v3 base score is 7.6 out of 10.