CVE-2021-28134

CRITICALNVD 9.89.8

9.8

Clipper before 1.0.5 allows remote command execution. A remote attacker may send a crafted IPC message to the exposed vulnerable ipcRenderer IPC interface, which invokes the dangerous openExternal API.

CVSS v3: 9.8
EG Score: 9.8(low)
EPSS: 92.3%
KEV: Not listed

Published

March 11, 2021

Last Modified

November 21, 2024

Advisory Details (4)

Auto-updated Jun 7, 2026

Patch available. Sources: github_pr, github_release.

github_release Patch Available

Minor security patch release

Patch available: AkashRajpurohit/clipper v1.0.5

https://github.com/AkashRajpurohit/clipper/releases/tag/v1.0.5

github_pr Patch Available

fix: check for allowed urls to be opened using shell.openExternal 🩹

Patch available: AkashRajpurohit/clipper v1.0.5 (PR #14 merged 2021-03-10)

https://github.com/AkashRajpurohit/clipper/pull/14/commits/28f1492a12234cf1e6af85c78bf22ee2f5090d19

github_pr Patch Available

fix: check for allowed urls to be opened using shell.openExternal 🩹

Patch available: AkashRajpurohit/clipper v1.0.5 (PR #14 merged 2021-03-10)

https://github.com/AkashRajpurohit/clipper/pull/14

generic

Potential Command Execution vulnerabilities introduced by preload.js · Issue #13 · AkashRajpurohit/clipper · GitHub

https://github.com/AkashRajpurohit/clipper/issues/13

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.

2026-06-07 17:16 UTCOSV refresh
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 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
2026-06-02 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

Frequently asked(5)

What is CVE-2021-28134?

CVE-2021-28134 is a critical vulnerability published on March 11, 2021. Clipper before 1.0.5 allows remote command execution. A remote attacker may send a crafted IPC message to the exposed vulnerable ipcRenderer IPC interface, which invokes the dangerous openExternal API.

When was CVE-2021-28134 disclosed?

CVE-2021-28134 was first published in the National Vulnerability Database on March 11, 2021, 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-2021-28134 actively exploited?

CVE-2021-28134 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 92.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-28134?

CVE-2021-28134 has a CVSS v3 base score of 9.8 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..

How do I remediate CVE-2021-28134?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-28134, 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-2021-28134

📅 Published

🔄 Last Modified

📋 Advisory Details (4)

Minor security patch release

fix: check for allowed urls to be opened using shell.openExternal 🩹

fix: check for allowed urls to be opened using shell.openExternal 🩹

Potential Command Execution vulnerabilities introduced by preload.js · Issue #13 · AkashRajpurohit/clipper · GitHub

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-28134?

Published

Last Modified

Advisory Details (4)

Frequently asked(5)