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.
Does this matter?
A public exploit is published in Exploit-DB and the impact is critical, while EPSS rates exploitation at 3.0%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use.
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.
- CVSS 3.1
- 9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 2.96% probability · 87th percentile
- Public exploits
- 1 in Exploit-DB · first 21 October 2026
- CISA KEV
- Not listed
- Weakness
- CWE-434
- Affected
- openeclass/openeclass
- Source
- cve@mitre.org
EPSS moved from 3.0% on 22 October 2026 to 3.0% on 29 October 2026.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- https://www.less-secure.com/2024/03/open-eclass-cve-2024-26503-unrestricted.htmlExploit, Third Party Advisory
- https://www.less-secure.com/2024/03/open-eclass-cve-2024-26503-unrestricted.htmlExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.