Is CVE-2026-28508 actively exploited?

No active exploitation of CVE-2026-28508 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-28508 be exploited remotely?

Yes. CVE-2026-28508 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-28508?

CVE-2026-28508 has a CVSS score of 9.2 (CRITICAL).

HOME VULNERABILITIESCVE-2026-28508

CRITICAL

CVE-2026-28508

CWE-918Published: March 6, 2026· Updated: Mar 9, 2026

9.2

CVSS v3.1

EPSS:0.17%probability of exploitation in 30 daysPercentile:37.3th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-28508 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeX

Impact

Confidentiality

Integrity

Availability

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X