Which versions of Java are affected by CVE-2026-2556?

Organizations using cskefu should be aware of moderate risk from CVE-2026-2556, a server-side request forgery vulnerability rated CVSS 6.3. Users could be tricked into performing unintended actions.

Is there a public PoC exploit available for CVE-2026-2556?

Yes, a public proof-of-concept exploit is available for CVE-2026-2556. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-2556?

Within 30 days: Identify affected systems running cskefu and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Java CVE-2026-2556

Q: What is the CVSS score of CVE-2026-2556?

CVE-2026-2556 has a CVSS 4.0 base score of 2.1 (Low). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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. EPSS exploitation probability: 0.0%.

LOW

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

2026-02-16 cna@vuldb.com

Java SSRF Cskefu

2.1

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

2.1 LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Severity Changed

Apr 29, 2026 - 01:11 NVD

MEDIUM LOW

CVSS changed

Apr 29, 2026 - 01:11 NVD

6.3 (MEDIUM) 2.1 (LOW)

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Feb 20, 2026 - 17:57 vuln.today

Public exploit code

CVE Published

Feb 16, 2026 - 13:16 nvd

MEDIUM 6.3

DescriptionCVE.org

A security vulnerability has been detected in cskefu up to 8.0.1. This issue affects some unknown processing of the file com/cskefu/cc/controller/resource/MediaController.java of the component Endpoint. The manipulation of the argument url leads to server-side request forgery. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

AnalysisAI

Server-side request forgery in Cskefu up to version 8.0.1 allows authenticated remote attackers to manipulate the URL parameter in the MediaController endpoint to perform arbitrary HTTP requests from the affected server. Public exploit code exists for this vulnerability and the vendor has not provided a patch despite early notification. The attack requires valid authentication credentials but can be executed remotely with low complexity.

Technical ContextAI

Classified as CWE-918 (Server-Side Request Forgery (SSRF)). Affects Cskefu. A security vulnerability has been detected in cskefu up to 8.0.1. This issue affects some unknown processing of the file com/cskefu/cc/controller/resource/MediaController.java of the component Endpoint. The manipulation of the argument url leads to server-side request forgery. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.