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CVE-2021-47927

📛 CVE Title

(no title)

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Description

WordPress Plugin WP Symposium Pro 2021.10 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts by exploiting insufficient sanitization of the forum name parameter. Attackers can submit POST requests to the admin setup page with JavaScript payloads in the wps_admin_forum_add_name parameter, which are stored and executed when the forum is accessed.

Overview

State
—
Assigner (CNA)
—
CVSS severity
medium
CVSS score
CVSS 6.4 / 10 6.4 6.4 / 10
CVSS vector
AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Effective score
6.4 / 10 MEDIUM source: CNA overview
CWE(s)
—
Reserved
—
Published
—
Last updated
—
Source
https://www.tenable.com/cve/CVE-2021-47927

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published
2026-05-10 13:16:28 UTC
NVD last modified
2026-05-12 14:24:15 UTC
NVD CVSS v3.1
CVSS 6.4 / 10 6.4 6.4 / 10 MEDIUM source: disclosure@vulncheck.com
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Exploitability subscore
3.1 / 10
Impact subscore
2.7 / 10
EPSS score
0.0003 (probability of exploitation in next 30 days)
EPSS percentile
10.24% vs all CVEs — higher = more likely to be exploited, as of 2026-05-24

NVD-assigned CWE(s): CWE-79 (differs from the CNA list above)

NVD / KEV / EPSS data refreshed 2026-05-24 23:58 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID
EUVD-2021-34789
Assigner
VulnCheck
Published
May 10, 2026, 12:43:48 PM
Updated
May 24, 2026, 1:37:08 AM
EUVD base score (CVSS 4.0)
5.1 / 10
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
EUVD-reported EPSS
0.0300
Vendors
Wpsymposiumpro
Products
WP Symposium Pro (2021.10)

ENISA description: WordPress Plugin WP Symposium Pro 2021.10 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts by exploiting insufficient sanitization of the forum name parameter. Attackers can submit POST requests to the admin setup page with JavaScript payloads in the wps_admin_forum_add_name parameter, which are stored and executed when the forum is accessed.

EUVD references (4)

Vendor references (0)

References embedded in the original CVE record by the assigning CNA.

None in the CVE record.

Web references (7)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

NVD-tagged references (4)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

Remediations (10)

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Raw JSON

The full cvelistV5 record. Download as CVE-2021-47927.json.

Not stored.