CVE-2022-41679Network attack vector

Cookie theft via back_url reflected XSS

Published Oct 31, 2022 · Updated May 2, 2025

Cross-site scripting in Forma LMS 3.0.1 through 3.1.0 allows remote attackers to steal user cookies via a crafted back_url parameter. The appLms/index.php?modname=faq&op=play handler reflects back_url into a web response without neutralizing script content, allowing injected JavaScript to execute in a user's browser. Exploitation requires a victim to request the crafted link; the demonstrated consequence is cookie disclosure that can enable application login, with no reported service disruption.

CVSS severity6.1
Medium
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Forma LMS 3.0.1 through 3.1.0 allows remote attackers to steal user cookies via a crafted back_url parameter. The appLms/index.php?modname=faq&op=play handler reflects back_url into a web response without neutralizing script content, allowing injected JavaScript to execute in a user's browser. Exploitation requires a victim to request the crafted link; the demonstrated consequence is cookie disclosure that can enable application login, with no reported service disruption.

The record

CVE
CVE-2022-41679
Published
Oct 31, 2022
Updated
May 2, 2025
Vendor
forma.association
Product
Forma LMS
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 31, 2022CVE publishedPublication date reported by the CVE source.
  2. May 2, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=3.0.1 <=3.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

forma.association · Forma LMSversion=3.0.1 <=3.1.0

Published CVSS scores

4.7INCIBECVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

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Your stack

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