CVE-2021-25968

OpenCMS - Stored Cross-Site Scripting (XSS) in Sitemap

MEDIUM
5.4
CVSS Score
Published: October 19, 2021 at 08:15 AM UTC
Updated: June 17, 2026 at 03:42 AM UTC
2 products affected across 2 vendorsOpenCMSOpencms

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.5%
SSVC
PoC

Description

In “OpenCMS”, versions 10.5.0 to 11.0.2 are affected by a stored XSS vulnerability that allows low privileged application users to store malicious scripts in the Sitemap functionality. These scripts are executed in a victim’s browser when they open the page containing the vulnerable field.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

10.5.0 ≤ v < 11.0.2
Affected range stops below 11.0.2, so it looks safe — our inference, not a vendor statement
v ≥ 10.5.0v ≤ 11.0.210.5.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUMMend
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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