HOME VULNERABILITIESCVE-2023-5811

MEDIUM

CVE-2023-5811

CWE-79Published: October 27, 2023· Updated: Jun 17, 2026

4.8

CVSS v3.1

Official Description

A vulnerability, which was classified as problematic, was found in flusity CMS. Affected is the function loadPostAddForm of the file core/tools/posts.php. The manipulation of the argument menu_id leads to cross site scripting. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Continious delivery with rolling releases is used by this product. Therefore, no version details of affected nor updated releases are available. The patch is identified as 6943991c62ed87c7a57989a0cb7077316127def8. It is recommended to apply a patch to fix this issue. VDB-243642 is the identifier assigned to this vulnerability.

Technical Analysis

CVE-2023-5811 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.High

User InteractionRequired

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Affected Vendors & Products

flusity1 product(s)

flusity

Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/flusity/flusity-CMS/commit/6943991c62ed87c7a57989a0cb7077316127def8

PATCHhttps://github.com/flusity/flusity-CMS/commit/6943991c62ed87c7a57989a0cb7077316127def8

ADVISORYhttps://github.com/flusity/flusity-CMS/issues/3

ADVISORYhttps://vuldb.com/?ctiid.243642

ADVISORYhttps://vuldb.com/?id.243642

ADVISORYhttps://github.com/flusity/flusity-CMS/issues/3

ADVISORYhttps://vuldb.com/?ctiid.243642

ADVISORYhttps://vuldb.com/?id.243642

All References (8)

→

https://github.com/flusity/flusity-CMS/commit/6943991c62ed87c7a57989a0cb7077316127def8Patch

→

https://github.com/flusity/flusity-CMS/issues/3Exploit · Issue Tracking · Third Party Advisory

→

https://vuldb.com/?ctiid.243642Permissions Required · Third Party Advisory · VDB Entry

→

https://vuldb.com/?id.243642Permissions Required · Third Party Advisory · VDB Entry

→

https://github.com/flusity/flusity-CMS/commit/6943991c62ed87c7a57989a0cb7077316127def8Patch

→

https://github.com/flusity/flusity-CMS/issues/3Exploit · Issue Tracking · Third Party Advisory

→

https://vuldb.com/?ctiid.243642Permissions Required · Third Party Advisory · VDB Entry

→

https://vuldb.com/?id.243642Permissions Required · Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2023-5811

CVSS Score4.8 / 10

SeverityMEDIUM

WeaknessCWE-79

CISA KEVNo

Affected1 vendor(s)

PublishedOct 27, 2023

Related CVEs (CWE-79)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2023-5811 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.

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