CVE-2023-49339

MEDIUMNVD 6.56.5—Elevated

6.5

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

CVSS v3: 6.5
EG Score: 6.5(medium)
EPSS: 51.9%
KEV: Not listed

Published

February 13, 2024

Last Modified

May 7, 2025

References (4)

cve@mitrehttps://github.com/3zizme/CVE-2023-49339/
cve@mitrehttps://www.ellucian.com/solutions/ellucian-banner
af854a3a-2127-422b-91ae-364da2661108https://github.com/3zizme/CVE-2023-49339/
af854a3a-2127-422b-91ae-364da2661108https://www.ellucian.com/solutions/ellucian-banner

Weakness Classification(1)

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

CWE-639Authorization Bypass Through User-Controlled Key (IDOR)

Data Freshness Timeline

(refreshed 10× in last 7d / 19× 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.

2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:43 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-24 08:45 UTCEG score recompute
2026-05-24 08:45 UTCGHSA enrichment

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

GitHub PoC3zizme/CVE-2023-49339
First seen Jan 17, 2024
Critical Security Vulnerability in Ellucian Banner System
Open source ↗

Frequently asked(5)

What is CVE-2023-49339?

CVE-2023-49339 is a medium vulnerability published on February 13, 2024. Ellucian Banner 9.17 allows Insecure Direct Object Reference (IDOR) via a modified bannerId to the /StudentSelfService/ssb/studentCard/retrieveData endpoint.

When was CVE-2023-49339 disclosed?

CVE-2023-49339 was first published in the National Vulnerability Database on February 13, 2024, with the most recent update on May 7, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-49339 actively exploited?

CVE-2023-49339 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 51.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-49339?

CVE-2023-49339 has a CVSS v3 base score of 6.5 (NVD).

How do I remediate CVE-2023-49339?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-49339, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-49339

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