What is CVE-2026-18737?

CVE-2026-18737 is a medium-severity vulnerability in Shlinkio Shlink, classified under SQL Injection. CVSS score: 6.5/10. Published 2026-08-03.

How severe is CVE-2026-18737?

Medium severity. CVSS v3 base score is 6.5 out of 10.

SQL Injection in Shlinkio Shlink

CVE-2026-18737

Shlink contains a blind SQL injection vulnerability that allows any authenticated API key holder to inject arbitrary SQL fragments by supplying an unvalidated direction value in the orderBy query parameter of the tag statistics endpoint. A…

Vulnerability class: SQL Injection

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Shlinkio Shlink — versions 3.3.1

Weakness classification (CWE)

CWE-89 — SQL Injection

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-18737?: CVE-2026-18737 is a medium-severity vulnerability in Shlinkio Shlink, classified under SQL Injection. CVSS score: 6.5/10. Published 2026-08-03.
How severe is CVE-2026-18737?: Medium severity. CVSS v3 base score is 6.5 out of 10.