FastAdmin up to 1.2.0.20210401_beta User Controller User.php register/login url cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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3.9$0-$5k2.68

Summaryinfo

A vulnerability was found in FastAdmin up to 1.2.0.20210401_beta. It has been rated as problematic. Affected by this vulnerability is the function register/login of the file application/index/controller/User.php of the component User Controller. Performing a manipulation of the argument url results in cross site scripting. This vulnerability is cataloged as CVE-2026-86244. It is possible to initiate the attack remotely. Furthermore, there is an exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in FastAdmin up to 1.2.0.20210401_beta. It has been classified as problematic. This affects the function register/login of the file application/index/controller/User.php of the component User Controller. The manipulation of the argument url with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity.

It is possible to read the advisory at lhzzz08.github.io. This vulnerability is uniquely identified as CVE-2026-86244. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details and a public exploit are known. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The exploit is shared for download at lhzzz08.github.io. It is declared as proof-of-concept. By approaching the search of inurl:application/index/controller/User.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 1.2.1.20210731_beta eliminates this vulnerability. Applying the patch b3d32e2bf3637488cfe2fc58a27a9d2475b2b51b is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Google Hack: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: FastAdmin 1.2.1.20210731_beta
Patch: b3d32e2bf3637488cfe2fc58a27a9d2475b2b51b

Timelineinfo

09/06/2026 Advisory disclosed
09/06/2026 +0 days VulDB entry created
09/06/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: lhzzz08.github.io
Status: Confirmed

CVE: CVE-2026-86244 (🔒)
GCVE (CVE): GCVE-0-2026-86244
GCVE (VulDB): GCVE-100-399399
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/06/2026 11:40
Changes: 09/06/2026 11:40 (59)
Complete: 🔍
Submitter: zzl08
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #898809: fastadminnet fastadmin 1.2.0.20210401_beta Cross Site Scripting (by zzl08)

Be aware that VulDB is the high quality source for vulnerability data.

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