CVE-2026-27742
Bludit <= 3.16.2 Stored XSS in Post Content
Description
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.
INFO
Published Date :
Feb. 23, 2026, 10:16 p.m.
Last Modified :
Feb. 26, 2026, 3:04 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Implement server-side input validation and sanitization.
- Encode all output before rendering in the browser.
- Update Bludit to a patched version when available.
- Restrict user permissions where possible.
Public PoC/Exploit Available at Github
CVE-2026-27742 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-27742.
| URL | Resource |
|---|---|
| https://github.com/bludit/bludit/issues/1579 | Exploit Issue Tracking |
| https://www.vulncheck.com/advisories/bludit-stored-xss-in-post-content | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-27742 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-27742
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Personalización de mi perfil de GItHub.
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-27742 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-27742 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Feb. 26, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:bludit:bludit:*:*:*:*:*:*:*:* versions up to (excluding) 3.16.2 Added Reference Type VulnCheck: https://github.com/bludit/bludit/issues/1579 Types: Exploit, Issue Tracking Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/bludit-stored-xss-in-post-content Types: Third Party Advisory -
New CVE Received by [email protected]
Feb. 23, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/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 Added CVSS V3.1 AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Added CWE CWE-79 Added Reference https://github.com/bludit/bludit/issues/1579 Added Reference https://www.vulncheck.com/advisories/bludit-stored-xss-in-post-content