Which versions of Java are affected by CVE-2026-1813?

Organizations using bolo-blog bolo-solo should be aware of moderate risk from CVE-2026-1813, a improper access control vulnerability rated CVSS 6.3.

Is there a public PoC exploit available for CVE-2026-1813?

Yes, a public proof-of-concept exploit is available for CVE-2026-1813. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-1813?

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

Java CVE-2026-1813

Q: What is the CVSS score of CVE-2026-1813?

CVE-2026-1813 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

Improper Access Control (CWE-284)

2026-02-04 cna@vuldb.com

Java Authentication Bypass File Upload

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

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

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

Mar 03, 2026 - 00:19 vuln.today

Public exploit code

CVE Published

Feb 04, 2026 - 00:16 nvd

MEDIUM 6.3

DescriptionCVE.org

A vulnerability was found in bolo-blog bolo-solo up to 2.6.4. Affected is an unknown function of the file src/main/java/org/b3log/solo/bolo/pic/PicUploadProcessor.java of the component FreeMarker Template Handler. The manipulation of the argument File results in unrestricted upload. It is possible to launch the attack remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.

AnalysisAI

Unrestricted file upload in Bolo Solo up to version 2.6.4 allows authenticated remote attackers to upload arbitrary files via the FreeMarker Template Handler component. Public exploit code exists for this vulnerability, and the vendor has not yet released a patch despite early notification. An attacker with valid credentials can achieve limited confidentiality, integrity, and availability impacts.

Technical ContextAI

Classified as CWE-284 (Improper Access Control). Affects Bolo-Solo. A vulnerability was found in bolo-blog bolo-solo up to 2.6.4. Affected is an unknown function of the file src/main/java/org/b3log/solo/bolo/pic/PicUploadProcessor.java of the component FreeMarker Template Handler. The manipulation of the argument File results in unrestricted upload. It is possible to launch the attack remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.