CVE-2020-13640

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

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

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 13%CVSS: 9.8Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

A SQL injection issue in the gVectors wpDiscuz plugin 5.3.5 and earlier for WordPress allows remote attackers to execute arbitrary SQL commands via the order parameter of a wpdLoadMoreComments request. (No 7.x versions are affected.)

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
65
EG Risk 65/100CISA SSVC

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%
Exploitation40% × 40%
Automatability30% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
13%
EPSS %ILE
96th
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (EG-KEV: elevated) · Automatable unknown (not published for this CVE) · Technical impact total (CVSS ≥ 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

June 18, 2020

Last Modified

November 21, 2024

Advisory Details (3)

Auto-updated Oct 4, 2026
Patch available.
generic

Security vulnerability issue in 5.3.5 version, please update! – wpDiscuz Announcements – wpDiscuz Support Forum

https://wpdiscuz.com/community/news/security-vulnerability-issue-in-5-3-5-please-udate/
generic

Comments – wpDiscuz – WordPress plugin | WordPress.org

https://wordpress.org/plugins/wpdiscuz/#developers
generic

oss-security - CVE-2020-13640: WordPress Plugin wpDiscuz <= 5.3.5 SQL injection

http://www.openwall.com/lists/oss-security/2020/07/06/1

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 22× 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. 2026-10-05 17:39 UTCEPSS rescore
  2. 2026-10-03 14:22 UTCEPSS rescore
  3. 2026-09-30 15:11 UTCEG score recompute
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  33. 2026-07-23 01:49 UTCEG score recompute
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  73. 2026-06-21 01:57 UTCEPSS rescore
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  75. 2026-06-19 19:23 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Nucleihttp/cves/2020/CVE-2020-13640.yaml
    First seen Jan 1, 2020

    wpDiscuz <= 5.3.5 - SQL Injection

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2020-13640?
CVE-2020-13640 is a critical vulnerability published on June 18, 2020. A SQL injection issue in the gVectors wpDiscuz plugin 5.3.5 and earlier for WordPress allows remote attackers to execute arbitrary SQL commands via the order parameter of a wpdLoadMoreComments request. (No 7.x versions are affected.)
When was CVE-2020-13640 disclosed?
CVE-2020-13640 was first published on June 18, 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-2020-13640 actively exploited?
CVE-2020-13640 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 13% probability of exploitation in the next 30 days (96th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2020-13640?
CVE-2020-13640 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2020-13640?
A fix for CVE-2020-13640 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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