CVE-2021-46360

HIGHNVD 8.88.8—Weaponized

8.8

Authenticated remote code execution (RCE) in Composr-CMS 10.0.39 and earlier allows remote attackers to execute arbitrary code via uploading a PHP shell through /adminzone/index.php?page=admin-commandr.

CVSS v3: 8.8
EG Score: 8.8(medium)
EPSS: 88.9%
KEV: Not listed

Published

February 9, 2022

Last Modified

November 21, 2024

References (4)

cve@mitrehttp://packetstormsecurity.com/files/171489/Composr-CMS-10.0.39-Remote-Code-Execution.html
cve@mitrehttps://github.com/sartlabs/0days/blob/main/Composr-CMS/Exploit.py
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/171489/Composr-CMS-10.0.39-Remote-Code-Execution.html
af854a3a-2127-422b-91ae-364da2661108https://github.com/sartlabs/0days/blob/main/Composr-CMS/Exploit.py

Weakness Classification(1)

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

CWE-434Unrestricted Upload of File with Dangerous Type

Data Freshness Timeline

(refreshed 10× 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.

2026-06-04 13:11 UTCepss_batch
2026-06-04 13:10 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
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2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
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2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 03:30 UTCEG score recompute
2026-05-26 03:30 UTCGHSA enrichment

Publicly available exploits

(1 reference)

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

Exploit-DBEDB-51060✓ verified
First seen Mar 25, 2023
Composr-CMS Version <=10.0.39 - Authenticated Remote Code Execution
Open source ↗

Frequently asked(5)

What is CVE-2021-46360?

CVE-2021-46360 is a high vulnerability published on February 9, 2022. Authenticated remote code execution (RCE) in Composr-CMS 10.0.39 and earlier allows remote attackers to execute arbitrary code via uploading a PHP shell through /adminzone/index.php?page=admin-commandr.

When was CVE-2021-46360 disclosed?

CVE-2021-46360 was first published in the National Vulnerability Database on February 9, 2022, 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-2021-46360 actively exploited?

CVE-2021-46360 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 88.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-46360?

CVE-2021-46360 has a CVSS v3 base score of 8.8 (NVD).

How do I remediate CVE-2021-46360?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-46360, 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-2021-46360

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(1)

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-46360?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (4)

Frequently asked(5)

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