CVE-2026-6356

CRITICALNVD 9.69.6—Elevated

9.6

A vulnerability in the web application allows standard users to escalate their privileges to those of a super administrator through parameter manipulation, enabling them to access and modify sensitive information.

CVSS v3: 9.6
EG Score: 9.6(high)
EPSS: 11.8%
KEV: Not listed

Published

April 22, 2026

Last Modified

May 12, 2026

Advisory Details (1)

Auto-updated May 1, 2026

🔬 Proof of concept available. No patch confirmed yet.

generic🟡 PoC Available

GitHub - Penguinsecq/CVE-2026-6356: Exploit PoC of CVE-2026-6356 · GitHub

https://github.com/Penguinsecq/CVE-2026-6356/

Weakness Classification(1)

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

CWE-1220

Data Freshness Timeline

(refreshed 12× in last 7d / 17× 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.

2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-26 13:44 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-21 22:43 UTCepss_batch
2026-05-20 22:38 UTCepss_batch
2026-05-20 16:11 UTCEG score recompute
2026-05-20 16:11 UTCGHSA enrichment
2026-05-20 11:22 UTCepss_batch

Frequently asked(5)

What is CVE-2026-6356?

CVE-2026-6356 is a critical vulnerability published on April 22, 2026. A vulnerability in the web application allows standard users to escalate their privileges to those of a super administrator through parameter manipulation, enabling them to access and modify sensitive information.

When was CVE-2026-6356 disclosed?

CVE-2026-6356 was first published in the National Vulnerability Database on April 22, 2026, with the most recent update on May 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-6356 actively exploited?

CVE-2026-6356 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 11.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-6356?

CVE-2026-6356 has a CVSS v3 base score of 9.6 (NVD).

How do I remediate CVE-2026-6356?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6356, 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-2026-6356

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