CVE-2023-28820 | BDVDB-2026-201231 Detail

Description#

Concrete CMS (previously concrete5) before 9.1 is vulnerable to stored XSS in RSS Displayer via the href attribute because the link element input was not sanitized.

Impact#

Per CVSS v3.1: confidentiality impact low, integrity impact none, availability impact none. Attack vector: network.

Weaknesses#

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

References#

Exploit#

No public exploit known

History#

Version 12023-04-28Record published in the CVE List.
Version 22025-01-31Most recent update recorded in the CVE List.

Published

Published: 2023-04-28
Last modified: 2025-01-31

Vendor information

Vendor: Not stated
Product: Not stated

Score

2.0 Low

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 33.8.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Cross-Site Scripting

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

No version data in the source record.

Scoring System

CVSS v4.0

Not available

CVSS v3.1

2.0 Low

CVSS:3.1/AC:H/AV:N/A:N/C:L/I:N/PR:H/S:U/UI:R

Metric breakdown
Attack Complexity	High
Attack Vector	Network
Availability	None
Confidentiality	Low
Integrity	None
Privileges Required	High
Scope	Unchanged
User Interaction	Required

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).