CVE-2024-26140Network attack vector

Stored XSS via unescaped xAPI statement values

Published Feb 20, 2024 · Updated Aug 1, 2024

Stored XSS in Yet Analytics LRS before 1.2.17 and SQL LRS before 0.7.5 allows remote authenticated users to inject browser content. The Statement Browser rendered xAPI statement JSON keys, scalar values, and data attributes without converting HTML metacharacters to entities. Exploitation requires permission to submit a crafted statement and a user to view it, enabling attacker-supplied script or markup to run in that viewer’s browser.

CVSS severity6.1
Medium
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Yet Analytics LRS before 1.2.17 and SQL LRS before 0.7.5 allows remote authenticated users to inject browser content. The Statement Browser rendered xAPI statement JSON keys, scalar values, and data attributes without converting HTML metacharacters to entities. Exploitation requires permission to submit a crafted statement and a user to view it, enabling attacker-supplied script or markup to run in that viewer’s browser.

The record

CVE
CVE-2024-26140
Published
Feb 20, 2024
Updated
Aug 1, 2024
Vendor
Yet Analytics
Product
Yet Analytics Core LRS Library
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 20, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2024Record 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=< 0.7.5
  2. Affected versionversion=< 1.2.17

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Yet Analytics · Yet Analytics Core LRS Libraryversion=< 0.7.5; version=< 1.2.17

Published CVSS scores

4.6GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L
6.1NIST NVDCVSS: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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

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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