CVE-2020-18766

CRITICALNVD 9.69.6—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.6 under NVD CVSS v3. EPSS exploit probability: 1.2%, top 36% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
9.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.6Exploit: None knownExposed: 0

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

A cross-site scripting (XSS) vulnerability AntSword v2.0.7 can remotely execute system commands.

CVSS v3
9.6
EG Score
9.6(medium)
EG Risk
48(Track)
EG Risk 48/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity96% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
65%
KEV
Not listed

Published

October 26, 2020

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated Aug 17, 2026
No patch confirmed yet.
generic

There is RCE Vulnerability in antSword · Issue #147 · AntSwordProject/antSword · GitHub

https://github.com/AntSwordProject/antSword/issues/147

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 33× 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.

Showing the most recent 100 of 127 total refreshes for this CVE.

  1. 2026-08-20 22:52 UTCEPSS rescore
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  75. 2026-06-07 14:30 UTCOSV refresh

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Frequently asked(5)

What is CVE-2020-18766?
CVE-2020-18766 is a critical vulnerability published on October 26, 2020. A cross-site scripting (XSS) vulnerability AntSword v2.0.7 can remotely execute system commands.
When was CVE-2020-18766 disclosed?
CVE-2020-18766 was first published in the National Vulnerability Database on October 26, 2020, 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-2020-18766 actively exploited?
CVE-2020-18766 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 35.5% of all scored CVEs.
What is the CVSS score of CVE-2020-18766?
CVE-2020-18766 has a CVSS v3 base score of 9.6 (NVD).
How do I remediate CVE-2020-18766?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-18766, 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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