CRITICAL

CVE-2024-26503

CVSS v3

9.1

CRITICAL

EPSS Score

1.1 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2024-26503 yet.

Full record on NVD

Description

Unrestricted File Upload vulnerability in Greek Universities Network Open eClass v.3.15 and earlier allows attackers to run arbitrary code via upload of crafted file to certbadge.php endpoint.

Technical details

Published: 2024-03-14

Frequently asked questions

What is CVE-2024-26503?

Unrestricted File Upload vulnerability in Greek Universities Network Open eClass v.3.15 and earlier allows attackers to run arbitrary code via upload of crafted file to certbadge.php endpoint.

Is CVE-2024-26503 actively exploited?

Active exploitation of CVE-2024-26503 has not been confirmed. Its EPSS score was 1.1% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2024-26503?

CVE-2024-26503 has a CVSS v3 base score of 9.1 (CRITICAL severity).

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