CVE-2025-5198VulnerabilityPublished 27 May 2025Updated 27 Feb 2026

CVE-2025-5198: Red Hat Advanced Cluster Security 4 · Cross-site Scripting

Affects Red Hat Advanced Cluster Security 4Source CVE Database V5

Not known to be exploited · CVSS 5.0 Medium.

Data as of 26 Oct 2026, 07:57 UTC

CVSS 3.1 base score

5.0Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.2% chance of exploitation in 30 days – higher than 21% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

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

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: High: A successful attack depends on conditions beyond the attacker's control. That is, a successful attack cannot be accomplished at will, but requires the attacker to invest in some measurable amount of effort in preparation or execution against the vulnerable component before a successful attack can be expected. For example, a successful attack may require an attacker to: gather knowledge about the environment in which the vulnerable target/component exists; prepare the target environment to improve exploit reliability; or inject themselves into the logical network path between the target and the resource requested by the victim in order to read and/or modify network communications (e.g., a man in the middle attack).
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
Integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on the impacted component.
Availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the impacted component are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 27 May 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
GitHubstackrox/stackrox`pkg:github/stackrox/stackrox`Other threats	Affected =4.4.0 =4.5.0	Fixed in–

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AI-suggested

To mitigate CVE-2025-5198, organizations should immediately upgrade Red Hat Advanced Cluster Security to versions beyond 4.5.0 once patches are released. In the interim, restrict permissions to create or modify Kubernetes Role objects to trusted administrators only, minimizing the risk of malicious Role name injection. Implement strict input validation and sanitization on all user-supplied data fields, especially those rendered in the web interface, to prevent script injection. Employ Content Security Policy (CSP) headers to limit the execution of unauthorized scripts in the web console. Monitor audit logs for unusual Role object creation or modification activities. Additionally, isolate the management console network access to trusted IPs and enforce multi-factor authentication to reduce the risk of compromised credentials being used to exploit this vulnerability. Regularly review third-party integrations for security posture, as compromised third-party products could serve as an attack vector. Finally, educate users about the risks of XSS and encourage cautious interaction with management interfaces.

Description

A flaw was found in Stackrox, where it is vulnerable to Cross-site scripting (XSS) if the script code is included in a small subset of table cells. The only known potential exploit is if the script is included in the name of a Kubernetes “Role” object* that is applied to a secured cluster. This object can be used by a user with access to the cluster or through a compromised third-party product.

Impact

The potential impact of CVE-2025-5198 includes unauthorized script execution within the context of the Red Hat Advanced Cluster Security web interface. This can lead to theft of authentication tokens, session hijacking, or execution of unauthorized actions on behalf of the user. While the vulnerability requires an attacker to have the ability to inject malicious Role objects or compromise a third-party product with such access, the risk is significant in environments where multiple users access the management console. The impact on confidentiality is limited to what can be accessed via the web interface session, while integrity and availability could be affected if the attacker uses the XSS to perform unauthorized changes or disrupt cluster management. Organizations relying on Red Hat Advanced Cluster Security for Kubernetes cluster protection could face increased risk of lateral movement or privilege escalation if this vulnerability is exploited in conjunction with other weaknesses. Given the medium CVSS score and the requirement for user interaction, the threat is moderate but should not be underestimated in high-security environments.

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 27 Feb 2026, 15:07 UTC

Technical details

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