CVE-2018-18830

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2018-11-01. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

An issue was discovered in com\mingsoft\basic\action\web\FileAction.java in MCMS 4.6.5. Since the upload interface does not verify the user login status, you can use this interface to upload files without setting a cookie. First, start an upload of JSP code with a .png filename, and then intercept the data packet. In the name parameter, change the suffix to jsp. In the response, the server returns the storage path of the file, which can be accessed to execute arbitrary JSP code.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
—
EPSS
65.0%
KEV
Not listed

Published

October 30, 2018

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated Jul 3, 2026
No patch confirmed yet.
generic

Unauthorized upload vulnerability · Issue #IO0IQ · 铭飞/MCMS - Gitee.com

https://gitee.com/mingSoft/MCMS/issues/IO0IQ

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
mavennet.mingsoft:ms-mcms—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
net.mingsoft:ms-mcms4.6.3-SNAPSHOTS, 4.6.5——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 47× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-22 22:14 UTCEG score recompute
  2. 2026-07-22 14:05 UTCEPSS rescore
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  67. 2026-05-28 01:33 UTCGHSA enrichment
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Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2018-18830?
CVE-2018-18830 is a critical vulnerability published on October 30, 2018. An issue was discovered in com\mingsoft\basic\action\web\FileAction.java in MCMS 4.6.5. Since the upload interface does not verify the user login status, you can use this interface to upload files without setting a cookie. First, start an upload of JSP code with a .png filename, and then intercept…
When was CVE-2018-18830 disclosed?
CVE-2018-18830 was first published in the National Vulnerability Database on October 30, 2018, 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-2018-18830 actively exploited?
CVE-2018-18830 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 65.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-18830?
CVE-2018-18830 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2018-18830?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-18830, 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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