CVE-2018-20150

MEDIUMNVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

Score 6.1 from GitHub Security Advisory published 2022-05-14. NVD baseline CVSS 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 4%CVSS: 6.1Exploit: None knownExposed: 0

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

In WordPress before 4.9.9 and 5.x before 5.0.1, crafted URLs could trigger XSS for certain use cases involving plugins.

CVSS v3
6.1
EG Score
6.1(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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
Severity61% × 45%
Exploitation5% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
4%
EPSS %ILE
90%
KEV
Not listed

Published

December 14, 2018

Last Modified

November 21, 2024

References (18)

Affected Packages

(6 across 6 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
wordpress—5.0.1+dfsg1-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
wordpress—5.0.1+dfsg1-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
wordpress—5.0.1+dfsg1-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
wordpress—5.0.1+dfsg1-1—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
wordpress4.1+dfsg-1 ... 4.1.1+dfsg-1 (20 versions)4.1.25+dfsg-1+deb8u1—
Debian:9(1)
PackageVulnerable rangeFixed inDependents
wordpress4.7.5+dfsg-2 ... 4.7.5+dfsg-2+deb9u4 (7 versions)4.7.5+dfsg-2+deb9u5—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 28× 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 121 total refreshes for this CVE.

  1. 2026-08-20 22:51 UTCEPSS rescore
  2. 2026-08-19 17:00 UTCEPSS rescore
  3. 2026-08-18 13:44 UTCEPSS rescore
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  1. 2026-07-23 14:15 UTCEPSS rescore
  2. 2026-07-23 01:35 UTCEG score recompute
  3. 2026-07-22 22:15 UTCEG score recompute
  4. 2026-07-22 14:05 UTCEPSS rescore
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  6. 2026-07-21 01:47 UTCOSV refresh
  7. 2026-07-20 17:04 UTCEPSS rescore
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  23. 2026-07-09 19:06 UTCEPSS rescore
  24. 2026-07-08 15:11 UTCEPSS rescore
  25. 2026-07-07 13:42 UTCEPSS rescore
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  27. 2026-07-06 02:20 UTCEPSS rescore
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  63. 2026-06-15 08:43 UTCOSV refresh
  64. 2026-06-14 23:15 UTCEPSS rescore
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  69. 2026-06-11 13:57 UTCEPSS rescore
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  74. 2026-06-06 13:45 UTCEPSS rescore
  75. 2026-06-06 13:45 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2018-20150?
CVE-2018-20150 is a medium vulnerability published on December 14, 2018. In WordPress before 4.9.9 and 5.x before 5.0.1, crafted URLs could trigger XSS for certain use cases involving plugins.
When was CVE-2018-20150 disclosed?
CVE-2018-20150 was first published in the National Vulnerability Database on December 14, 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-2018-20150 actively exploited?
CVE-2018-20150 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4% probability of exploitation in the next 30 days, which ranks it in the top 9.7% of all scored CVEs.
What is the CVSS score of CVE-2018-20150?
CVE-2018-20150 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2018-20150?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-20150, 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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