What is CVE-2026-76783?

CVE-2026-76783 is a high-severity vulnerability in Dedecms, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.3/10. Published 2026-08-20.

How severe is CVE-2026-76783?

High severity. CVSS v3 base score is 7.3 out of 10.

SQL Injection in Dedecms

CVE-2026-76783

A security vulnerability has been detected in DeDeCMS 53_1_UTF8. This vulnerability affects unknown code of the file /plus/advancedsearch.php. Such manipulation of the argument sql leads to sql injection. The attack can be launched remotely. The exploit has been disclosed publicly and may be used.

Published 2026-08-20 · last modified 2026-08-20.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.004 (33.0th percentile), scored 2026-10-05.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 33.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.002

Affected products

Dedecms — versions 53_1_UTF8

Weakness classification (CWE)

References

vuldb.com/vuln/393243 (technical-description, vdb-entry)
vuldb.com/vuln/393243/cti (signature, permissions-required)
vuldb.com/cve/CVE-2026-76783 (third-party-advisory)
vuldb.com/submit/879225 (third-party-advisory)
uvxbywu62qm.feishu.cn/wiki/X1T5w8jPUinAsVkM0bhcZf4XnHe (exploit)

Frequently asked questions

What is CVE-2026-76783?: CVE-2026-76783 is a high-severity vulnerability in Dedecms, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.3/10. Published 2026-08-20.
How severe is CVE-2026-76783?: High severity. CVSS v3 base score is 7.3 out of 10.