What is the CVSS score of CVE-2026-27742?

CVE-2026-27742 has a CVSS 3.1 base score of 5.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Bludit are affected by CVE-2026-27742?

Organizations using Bludit version 3.16.2 should be aware of moderate risk from CVE-2026-27742, a cross-site scripting vulnerability rated CVSS 5.4.

Is there a public PoC exploit available for CVE-2026-27742?

Yes, a public proof-of-concept exploit is available for CVE-2026-27742. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-27742?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Bludit CVE-2026-27742

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-02-23 disclosure@vulncheck.com

XSS Bludit

5.4

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.4 MEDIUM

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Feb 26, 2026 - 03:04 vuln.today

Public exploit code

CVE Published

Feb 23, 2026 - 22:16 nvd

MEDIUM 5.4

DescriptionCVE.org

Bludit version 3.16.2 contains a stored cross-site scripting (XSS) vulnerability in the post content functionality. The application performs client-side sanitation of content input but does not enforce equivalent sanitation on the server side. An authenticated user can inject arbitrary JavaScript into the content field of a post, which is stored and later rendered to other users without proper output encoding. When viewed, the injected script executes in the context of the victim’s browser, allowing session hijacking, credential theft, content manipulation, or other actions within the user’s privileges.

AnalysisAI

Stored XSS in Bludit 3.16.2 allows authenticated users to inject malicious JavaScript into post content that executes when viewed by other users, enabling session hijacking and credential theft. The vulnerability exists because the application relies solely on client-side input validation while failing to sanitize or encode content server-side. …

Unlock full vulnerability intelligence

Risk assessment & exploitation conditions
Attack chain visualization
Remediation with exact patch versions
Threat intelligence from 22 sources
Personal watchlist & email alerts

Continue with Google Continue with GitHub

Free forever · No credit card required

Vulnerability AssessmentAI

Risk Assessment	CVSS 5.4 (MEDIUM). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An attacker (requires authentication) could exploit this vulnerability to compromise the affected system.
Remediation	Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. …

Threat intelligence, references, and detailed analysis are available after sign-in.

CVE-2026-27742 vulnerability details – vuln.today

Back