CVE-2018-7476 — controllers/admin/Linkage

controllers/admin/Linkage.php in dayrui FineCms 5.3.0 has Cross Site Scripting (XSS) via the id or lid parameter in a c=linkage,m=import request to admin.php, because the xss_clean protection mechanism is defeated by crafted input that lacks a '<' or '>'

01What is this vulnerability?

controllers/admin/Linkage.php in dayrui FineCms 5.3.0 has Cross Site Scripting (XSS) via the id or lid parameter in a c=linkage,m=import request to admin.php, because the xss_clean protection mechanism is defeated by crafted input that lacks a '<' or '>' character.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2018-02-25T19:00:00.000Z
• Last modified: 2024-08-05T06:31:03.571Z

09References

• www.from0to1.me — https://www.from0to1.me/index.php/archives/22/
• gitee.com — https://gitee.com/w1tcher/finecms/commit/6978c63b3bc5e0d1038a23bfc6293ad5e9d5f53…