CVE-2020-28036

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-24. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 5%CVSS: 9.8Exploit: None knownExposed: 0

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

wp-includes/class-wp-xmlrpc-server.php in WordPress before 5.5.2 allows attackers to gain privileges by using XML-RPC to comment on a post.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
51(Track)
EG Risk 51/100SSVC: 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
Severity98% × 45%
Exploitation5% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
5%
EPSS %ILE
92%
KEV
Not listed

Published

November 2, 2020

Last Modified

November 21, 2024

Advisory Details (7)

Auto-updated Sep 19, 2026
Patch available. Sources: github_commit.
generic Patch Available

[SECURITY] [DLA 2429-1] wordpress security update

https://lists.debian.org/debian-lts-announce/2020/11/msg00004.html
github_commit

commit c9e6b9896802 (WordPress/wordpress-develop)

Fix landed in WordPress/wordpress-develop commit c9e6b9896802 — awaiting tagged release

https://github.com/WordPress/wordpress-develop/commit/c9e6b98968025b1629015998d12c3102165a7d32
generic

[SECURITY] [DSA 4784-1] wordpress security update

https://www.debian.org/security/2020/dsa-4784
generic

WordPress 5.5.2 Security and Maintenance Release – WordPress News

https://wordpress.org/news/2020/10/wordpress-5-5-2-security-and-maintenance-release/
generic

[SECURITY] Fedora 33 Update: wordpress-5.5.3-1.fc33 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUXVUAKL2HL4QYJEPHBNVQQWRMFMII2Y/
generic

[SECURITY] Fedora 31 Update: wordpress-5.5.3-1.fc31 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VAVVYJKA2I6CRQUINECDPBGWMQDEG244/
generic

[SECURITY] Fedora 32 Update: wordpress-5.5.3-1.fc32 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CHHVNK2WYAM3ZTCXTFSEIT56IKLVJHU3/

Affected Packages

(6 across 6 ecosystems)
Debian:10(1)
PackageVulnerable rangeFixed inDependents
wordpress5.0.10+dfsg1-0+deb10u1, 5.0.4+dfsg1-1, 5.0.4+dfsg1-1+deb10u1, 5.0.4+dfsg1-1+deb10u25.0.11+dfsg1-0+deb10u1—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
wordpress—5.5.3+dfsg1-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
wordpress—5.5.3+dfsg1-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
wordpress—5.5.3+dfsg1-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
wordpress—5.5.3+dfsg1-1—
Debian:9(1)
PackageVulnerable rangeFixed inDependents
wordpress4.7.18+dfsg-1+deb9u1 ... 4.7.5+dfsg-2+deb9u6 (10 versions)4.7.19+dfsg-1+deb9u1—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 23× 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 142 total refreshes for this CVE.

  1. 2026-09-19 23:46 UTCOSV refresh
  2. 2026-09-19 15:37 UTCEPSS rescore
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  26. 2026-07-23 01:52 UTCEG score recompute
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Frequently asked(5)

What is CVE-2020-28036?
CVE-2020-28036 is a critical vulnerability published on November 2, 2020. wp-includes/class-wp-xmlrpc-server.php in WordPress before 5.5.2 allows attackers to gain privileges by using XML-RPC to comment on a post.
When was CVE-2020-28036 disclosed?
CVE-2020-28036 was first published in the National Vulnerability Database on November 2, 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-2020-28036 actively exploited?
CVE-2020-28036 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5% probability of exploitation in the next 30 days, which ranks it in the top 8.1% of all scored CVEs.
What is the CVSS score of CVE-2020-28036?
CVE-2020-28036 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2020-28036?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-28036, 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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