CVE-2026-28508Idno: Unauthenticated SSRF via URL Unfurl Endpoint
Updated under an hour ago ()
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It affects idno and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
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. Combined with the absence of a login requirement on the endpoint itself, this allows an attacker to force the server to make arbitrary outbound HTTP requests to any host, including internal network addresses and cloud instance metadata services, and retrieve the response content. This issue has been patched in version 1.6.4.
- CVSS
- 9.2 CRITICAL (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
- Weakness (CWE)
- CWE-918
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Mar 6, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
idno idno idno:idno (from the name) | before 1.6.4 | CNA record |
withknown known withknown:known | before 1.6.4 | NVD |
References
- https://github.com/idno/idno/security/advisories/GHSA-fcrh-fqxh-6fx6x-refsource-confirm, exploit, mitigation, vendor-advisory
- https://github.com/idno/idno/releases/tag/1.6.4x-refsource-misc, product, release-notes
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.