What is CVE-2026-28508?

CVE-2026-28508 is a high-severity vulnerability in Idno, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.6/10. Published 2026-03-06.

How severe is CVE-2026-28508?

High severity. CVSS v3 base score is 8.6 out of 10.

SSRF in Idno

CVE-2026-28508

Idno is a social publishing platform. Prior to version 1.6.4, a logic error in the API authentication flow causes the CSRF protection on the URL unfurl service endpoint to be trivially bypassed by any unauthenticated remote attacker. Combi…

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.006 (45.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.

Affected products

Idno — versions < 1.6.4
Withknown Known

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)
security-advisories@github.com (Product, x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2026-28508?: CVE-2026-28508 is a high-severity vulnerability in Idno, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.6/10. Published 2026-03-06.
How severe is CVE-2026-28508?: High severity. CVSS v3 base score is 8.6 out of 10.