CVE-2026-3007

MEDIUMNVD 5.45.4—

5.4

Successful exploitation of the stored cross-site scripting (XSS) vulnerability could allow an attacker to execute arbitrary JavaScript on any user account that has access to Koollab LMS’ courselet feature.

CVSS v3: 5.4
EG Score: 5.4(high)
EPSS: 1.5%
KEV: Not listed

Published

April 23, 2026

Last Modified

May 10, 2026

Advisory Details (1)

Auto-updated May 10, 2026

No patch confirmed yet.

generic

Vulnerability in Koollab Learning Management System (LMS) | Cyber Security Agency of Singapore

https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-042/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-79Cross-site Scripting (XSS)

Data Freshness Timeline

(refreshed 11× in last 7d / 17× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-26 13:44 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-20 22:38 UTCepss_batch
2026-05-20 22:38 UTCepss_batch
2026-05-20 16:03 UTCEG score recompute
2026-05-20 16:03 UTCGHSA enrichment
2026-05-20 11:22 UTCepss_batch
2026-05-20 11:22 UTCepss_batch

Frequently asked(5)

What is CVE-2026-3007?

CVE-2026-3007 is a medium vulnerability published on April 23, 2026. Successful exploitation of the stored cross-site scripting (XSS) vulnerability could allow an attacker to execute arbitrary JavaScript on any user account that has access to Koollab LMS’ courselet feature.

When was CVE-2026-3007 disclosed?

CVE-2026-3007 was first published in the National Vulnerability Database on April 23, 2026, with the most recent update on May 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-3007 actively exploited?

CVE-2026-3007 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-3007?

CVE-2026-3007 has a CVSS v3 base score of 5.4 (NVD).

How do I remediate CVE-2026-3007?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-3007, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2026-3007

📅 Published

🔄 Last Modified

📋 Advisory Details (1)

Vulnerability in Koollab Learning Management System (LMS) | Cyber Security Agency of Singapore

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-3007?

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Advisory Details (1)

Frequently asked(5)

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