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CVE-2026-129251

hrshadhin CloudSchool Event Description EventController.php cross site scripting

  • Medium 4.8

Description

A vulnerability was detected in hrshadhin CloudSchool up to 3.0.1. This affects an unknown function of the file app/Http/Controllers/Backend/EventController.php of the component Event Description Handler. The manipulation of the argument data results in cross site scripting. It is possible to launch the attack remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Key facts

Published
14 Nov 2026
Last changed
14 Nov 2026
Assigned by
VulDB
EPSS
0.329% likely to be exploited in the next 30 days, higher than 26.405% of CVEs (scores for 15 Nov 2026)

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 4.8CVSS 4.0, Mediumfrom the CNA (VulDB)CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
  • 2.4CVSS 3.1, Lowfrom the CNA (VulDB)CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:C
  • 2.4CVSS 3.0, Lowfrom the CNA (VulDB)CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:C
  • 3.3CVSS 2.0, Lowfrom the CNA (VulDB)AV:N/AC:L/Au:M/C:N/I:P/A:N/E:POC/RL:ND/RC:C

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

No explicit remediation statement is available on this page yet. Consult the original record and vendor references before choosing a fix.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
hrshadhinCloudSchool
  • 3.0.0 (affected)
  • 3.0.1 (affected)

Timeline

  1. 13 Nov 2026 Advisory disclosed
  2. 13 Nov 2026 VulDB entry created
  3. 13 Nov 2026 VulDB entry last update
  4. 14 Nov 2026 Published

Weakness

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References