CVE-2025-8261
Vaelsys VaelsysV4 User Creation vgrid_server.php improper authorization
Description
A weakness has been identified in Vaelsys VaelsysV4 4.1.0. This vulnerability affects unknown code of the file /grid/vgrid_server.php of the component User Creation Handler. Executing a manipulation can lead to improper authorization. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. The real existence of this vulnerability is still doubted at the moment. The vendor explains: "Based on Vaelsys' analysis, the reported behavior does not allow actions beyond those already permitted to authenticated administrative users, and no change in system configuration or operational practices is necessary."
INFO
Published Date :
July 28, 2025, 7:15 a.m.
Last Modified :
June 17, 2026, 10:06 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 2.0 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Contact the vendor for an update or patch.
- Review access controls and user permissions.
- Implement strict authorization checks for file access.
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-2025-8261.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-8261 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-2025-8261
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-8261 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-8261 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.
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Data Remediation by [email protected]
Apr. 29, 2026
Action Type Old Value New Value Changed CVSS V4.0 Score 6.9 5.5 -
CVE Modified by [email protected]
Apr. 15, 2026
Action Type Old Value New Value Added Tag disputed Changed Description A vulnerability was found in Vaelsys 4.1.0 and classified as critical. This issue affects some unknown processing of the file /grid/vgrid_server.php of the component User Creation Handler. The manipulation leads to improper authorization. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way. A weakness has been identified in Vaelsys VaelsysV4 4.1.0. This vulnerability affects unknown code of the file /grid/vgrid_server.php of the component User Creation Handler. Executing a manipulation can lead to improper authorization. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. The real existence of this vulnerability is still doubted at the moment. The vendor explains: "Based on Vaelsys' analysis, the reported behavior does not allow actions beyond those already permitted to authenticated administrative users, and no change in system configuration or operational practices is necessary." Added Reference https://vaelsys.github.io/security-advisory/advisories/VSEC_V4_2025_07_0003.html Added Reference https://vuldb.com/submit/616924 Added Reference https://vuldb.com/vuln/317849 Added Reference https://vuldb.com/vuln/317849/cti Removed Reference https://vuldb.com/?ctiid.317849 Removed Reference https://vuldb.com/?id.317849 Removed Reference https://vuldb.com/?submit.616924 Removed Reference Type https://vuldb.com/?ctiid.317849 Types: Permissions Required, VDB Entry Removed Reference Type https://vuldb.com/?id.317849 Types: Third Party Advisory, VDB Entry Removed Reference Type https://vuldb.com/?submit.616924 Types: Third Party Advisory, VDB Entry -
Initial Analysis by [email protected]
Jul. 31, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE NVD-CWE-Other Added CPE Configuration OR *cpe:2.3:a:vaelsys:vaelsys:4.1.0:*:*:*:*:*:*:* Added Reference Type VulDB: https://github.com/waiwai24/0101/blob/main/CVEs/Vaelsys/Unauthorized_User_Creation_Vulnerability_Exists_in_Vaelsys_V4_Platform.md Types: Exploit, Third Party Advisory Added Reference Type VulDB: https://vuldb.com/?ctiid.317849 Types: Permissions Required, VDB Entry Added Reference Type VulDB: https://vuldb.com/?id.317849 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/?submit.616924 Types: Third Party Advisory, VDB Entry -
New CVE Received by [email protected]
Jul. 28, 2025
Action Type Old Value New Value Added Description A vulnerability was found in Vaelsys 4.1.0 and classified as critical. This issue affects some unknown processing of the file /grid/vgrid_server.php of the component User Creation Handler. The manipulation leads to improper authorization. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/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 Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L Added CVSS V2 (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CWE CWE-285 Added CWE CWE-266 Added Reference https://github.com/waiwai24/0101/blob/main/CVEs/Vaelsys/Unauthorized_User_Creation_Vulnerability_Exists_in_Vaelsys_V4_Platform.md Added Reference https://vuldb.com/?ctiid.317849 Added Reference https://vuldb.com/?id.317849 Added Reference https://vuldb.com/?submit.616924