CVE-2020-21554

HIGHNVD 8.18.1—

8.1

A File Deletion vulnerability exists in TinyShop 3.1.1 in the back_list parameter in controllers\admin.php, which could let a malicious user delete any file such as install.lock to reinstall cms.

CVSS v3: 8.1
EG Score: 8.1(medium)
EPSS: 68.4%
KEV: Not listed

Published

March 25, 2022

Last Modified

November 21, 2024

References (8)

cve@mitrehttp://tinyrise.com/
cve@mitrehttp://tinyrise.com/down.html
cve@mitrehttps://imgur.com/dg1DM5T
cve@mitrehttps://imgur.com/pA8OWxa
af854a3a-2127-422b-91ae-364da2661108http://tinyrise.com/
af854a3a-2127-422b-91ae-364da2661108http://tinyrise.com/down.html
af854a3a-2127-422b-91ae-364da2661108https://imgur.com/dg1DM5T
af854a3a-2127-422b-91ae-364da2661108https://imgur.com/pA8OWxa

Data Freshness Timeline

(refreshed 12× in last 7d / 20× 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.

2026-06-08 14:15 UTCEPSS rescore
2026-06-08 14:15 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore

Frequently asked(5)

What is CVE-2020-21554?

CVE-2020-21554 is a high vulnerability published on March 25, 2022. A File Deletion vulnerability exists in TinyShop 3.1.1 in the back_list parameter in controllers\admin.php, which could let a malicious user delete any file such as install.lock to reinstall cms.

When was CVE-2020-21554 disclosed?

CVE-2020-21554 was first published in the National Vulnerability Database on March 25, 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-2020-21554 actively exploited?

CVE-2020-21554 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 68.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-21554?

CVE-2020-21554 has a CVSS v3 base score of 8.1 (NVD).

How do I remediate CVE-2020-21554?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-21554, 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.

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CVE-2020-21554

📅 Published

🔄 Last Modified

🔗 References (8)