CVE-2020-36998Public exploitNetwork attack vector

Stored JavaScript execution via unsanitized form fields

Published Jan 30, 2026 · Updated Jan 30, 2026

Stored XSS in Forma LMS 2.3.0.2 and earlier allows remote authenticated users to execute JavaScript through course or profile fields. Course editing stores unencoded course_code, course_name, course_box_descr, and course_descr values, while profile email filtering can be bypassed, causing saved input to run when rendered. Course-field injection requires administrator access; profile injection requires a signed-in profile, and viewing the saved content triggers code in the application origin.

CVSS severity6.4
Medium
EPSS probability0.26%
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 Forma LMS 2.3.0.2 and earlier allows remote authenticated users to execute JavaScript through course or profile fields. Course editing stores unencoded course_code, course_name, course_box_descr, and course_descr values, while profile email filtering can be bypassed, causing saved input to run when rendered. Course-field injection requires administrator access; profile injection requires a signed-in profile, and viewing the saved content triggers code in the application origin.

The record

CVE
CVE-2020-36998
Published
Jan 30, 2026
Updated
Jan 30, 2026
Vendor
forma.association
Product
Forma LMS
Classifications
CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 30, 2026Record 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 <=2.3.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

forma.association · Forma LMSversion=0 <=2.3.0.2

Published CVSS scores

6.4VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
5.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
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