What is CVE-2026-90527?

CVE-2026-90527 is a medium-severity vulnerability in Quequnlong Shiyi-Blog, classified under Cross-site Scripting. CVSS score: 4.3/10. Published 2026-09-13.

How severe is CVE-2026-90527?

Medium severity. CVSS v3 base score is 4.3 out of 10.

RCE in Quequnlong Shiyi-Blog

CVE-2026-90527

A vulnerability was detected in quequnlong shiyi-blog up to 1.2.1. Affected is an unknown function of the file blog-admin/src/views/message/message/index.vue of the component Add Message API. The manipulation of the argument body.content results in cross site scripting. The attack can be executed remotely. The project was informed of the problem early through an issue report but has not responded yet.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-09-13 · last modified 2026-09-16.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (40.5th percentile), scored 2026-10-28.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Quequnlong Shiyi-Blog — versions 1.2.0, 1.2.1

Weakness classification (CWE)

References

vuldb.com/vuln/403117 (technical-description, vdb-entry)
vuldb.com/vuln/403117/cti (signature, permissions-required)
vuldb.com/cve/CVE-2026-90527 (third-party-advisory)
vuldb.com/submit/912534 (third-party-advisory)
gitee.com/quequnlong/shiyi-blog/issues/IK5RF6 (issue-tracking)
gitee.com/quequnlong/shiyi-blog/ (product)

Frequently asked questions

What is CVE-2026-90527?: CVE-2026-90527 is a medium-severity vulnerability in Quequnlong Shiyi-Blog, classified under Cross-site Scripting. CVSS score: 4.3/10. Published 2026-09-13.
How severe is CVE-2026-90527?: Medium severity. CVSS v3 base score is 4.3 out of 10.