What is CVE-2023-49339?

CVE-2023-49339 is a medium-severity vulnerability in Ellucian Banner, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.5/10. Published 2024-02-13.

How severe is CVE-2023-49339?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2023-49339 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Ellucian Banner

CVE-2023-49339

Ellucian Banner 9.17 allows Insecure Direct Object Reference (IDOR) via a modified bannerId to the /StudentSelfService/ssb/studentCard/retrieveData endpoint.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2024-02-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.006 (46.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Ellucian Banner

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

Public proof-of-concept exploits

References

www.ellucian.com/solutions/ellucian-banner (Product)
github.com/3zizme/CVE-2023-49339/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-49339?: CVE-2023-49339 is a medium-severity vulnerability in Ellucian Banner, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.5/10. Published 2024-02-13.
How severe is CVE-2023-49339?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2023-49339 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.