CVE-2023-2709Public exploitNetwork attack vector

Stored XSS via unsanitized course fields

Published Jul 10, 2023 · Updated Nov 8, 2024

Stored XSS in Aori Nevo GradeBook 5.0.1 and earlier allows remote authenticated users with admin access to inject scripts through course fields. The new-course settings path stores every course field without sanitization or escaping and renders the saved values when the page reloads. An administrator can persist browser-executed code even when unfiltered_html is disabled, including in a multisite configuration.

CVSS severity4.8
Medium
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stored XSS in Aori Nevo GradeBook 5.0.1 and earlier allows remote authenticated users with admin access to inject scripts through course fields. The new-course settings path stores every course field without sanitization or escaping and renders the saved values when the page reloads. An administrator can persist browser-executed code even when unfiltered_html is disabled, including in a multisite configuration.

The record

CVE
CVE-2023-2709
Published
Jul 10, 2023
Updated
Nov 8, 2024
Vendor
Aori Nevo
Product
GradeBook
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 10, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 8, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=5.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Aori Nevo · GradeBookversion=0 <=5.0.1

Published CVSS scores

4.8NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo