CVE-2016-9026

CRITICALNVD 9.89.8—

9.8

Exponent CMS before 2.6.0 has improper input validation in fileController.php.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 67.1%
KEV: Not listed

Published

December 31, 2020

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated May 31, 2026

Patch available. Sources: github_commit.

github_commit Patch Available

commit a8efd9ca71fc (exponentcms/exponent-cms)

Patch available: exponentcms/exponent-cms v2.4.3 (contains commit a8efd9ca71fc)

https://github.com/exponentcms/exponent-cms/commit/a8efd9ca71fc9b8b843ad0910d435d237482ee31

generic

Changeset: Changeset [a8efd9ca71fc9b8b843ad0910d435d237482ee31] by dleffler - Exponent CMS - exponentcms

https://exponentcms.lighthouseapp.com/projects/61783/changesets/a8efd9ca71fc9b8b843ad0910d435d237482ee31

Weakness Classification(1)

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

CWE-20Improper Input Validation

Data Freshness Timeline

(refreshed 12× in last 7d / 20× 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.

2026-06-07 15:22 UTCepss_batch
2026-06-07 15:22 UTCepss_batch
2026-06-06 13:45 UTCepss_batch
2026-06-06 13:45 UTCepss_batch
2026-06-05 22:44 UTCepss_batch
2026-06-05 06:08 UTCepss_batch
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2026-06-04 13:10 UTCepss_batch
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2026-06-02 20:10 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
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2026-05-31 22:28 UTCepss_batch
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2026-05-31 00:14 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
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2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch

Frequently asked(5)

What is CVE-2016-9026?

CVE-2016-9026 is a critical vulnerability published on December 31, 2020. Exponent CMS before 2.6.0 has improper input validation in fileController.php.

When was CVE-2016-9026 disclosed?

CVE-2016-9026 was first published in the National Vulnerability Database on December 31, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2016-9026 actively exploited?

CVE-2016-9026 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 67.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2016-9026?

CVE-2016-9026 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2016-9026?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-9026, 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-2016-9026

📅 Published

🔄 Last Modified

📋 Advisory Details (2)