VulnerabilityPublished 21 Sep 2022Updated 28 May 2025

CVE-2022-41240: Jenkins Walti Plugin · Cross-site Scripting

Affects Jenkins Walti PluginSource CVE Database V5

Not known to be exploited · CVSS 5.4 Medium.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score

5.4Medium

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

EPSS: 0.5% chance of exploitation in 30 days – higher than 46% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

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

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: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
Scope: Changed: An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities.
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: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 21 Sep 2022
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 26 Oct 2026.

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 or the CVSS exploit maturity 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
Jenkins project Jenkins Walti Plugin	Affected <=1.0.1	Fixed in–

AI-suggested

To mitigate CVE-2022-41240 effectively, European organizations should take the following specific steps beyond generic advice: 1) Immediately audit Jenkins instances to identify usage of the Walti plugin version 1.0.1 or earlier. 2) If an updated, patched version of the Walti plugin is available from the Jenkins project or plugin maintainers, prioritize upgrading to that version. 4) Review and restrict which users have privileges to configure or influence Walti API integrations, minimizing the risk that an attacker can inject malicious API responses. 5) Implement strict network controls and API validation to ensure that only trusted and verified Walti API endpoints are used, preventing attackers from supplying malicious data. 6) Educate Jenkins users about the risk of interacting with untrusted content and encourage cautious behavior regarding links or inputs within Jenkins dashboards. 7) Monitor Jenkins logs and web traffic for unusual activity or signs of XSS exploitation attempts. 8) Employ Content Security Policy (CSP) headers in Jenkins web interfaces to limit the execution of unauthorized scripts, which can mitigate the impact of XSS attacks. 9) Regularly review and update Jenkins and all plugins to maintain security hygiene. These targeted actions will reduce the likelihood of exploitation and limit potential damage if an attack occurs.

Description

Jenkins Walti Plugin 1.0.1 and earlier does not escape the information provided by the Walti API, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to provide malicious API responses from Walti.

Impact

For European organizations, the impact of CVE-2022-41240 can be considerable, especially those relying heavily on Jenkins for software development and deployment workflows. Exploitation of this vulnerability could allow attackers to execute malicious scripts within the Jenkins web interface, potentially compromising user sessions, stealing sensitive information such as credentials or tokens, and manipulating build or deployment processes. This can lead to unauthorized code execution, insertion of malicious code into software artifacts, or disruption of development pipelines. Given the collaborative nature of Jenkins environments, a successful attack could propagate through multiple teams and projects, increasing the risk of widespread compromise. Additionally, organizations subject to strict data protection regulations such as GDPR must consider the confidentiality impact, as leakage of personal or sensitive data through XSS attacks could lead to compliance violations and financial penalties. The requirement for some level of privileges and user interaction reduces the likelihood of mass exploitation but does not eliminate risk in environments where multiple users have Jenkins access. The scope change indicates that the vulnerability could affect multiple components or users, amplifying potential damage. Since no known exploits are reported, proactive mitigation is critical to prevent future attacks.

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (opens in a new tab)
Base weaknessLikelihood of exploit: HighCWE Top 25 (2025): #1OWASP Top 10 A05:2025: Injection (opens in a new tab)
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
Architecture and Design · Libraries or Frameworks
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Implementation · Architecture and Design
Understand the context in which your data will be used and the encoding that will be expected. This is especially important when transmitting data between different components, or when generating outputs that can contain multiple encodings at the same time, such as web pages or multi-part mail messages.
Architecture and Design · Implementation · Attack Surface Reduction
Understand all the potential areas where untrusted inputs can enter your software: parameters or arguments, cookies, anything read from the network, environment variables, reverse DNS lookups, query results, request headers, URL components, e-mail, files, filenames, databases, and any external systems that provide…
OWASP Cheat Sheets
Cross Site Scripting Prevention (opens in a new tab)
DOM based XSS Prevention (opens in a new tab)
Injection Prevention (opens in a new tab)
Abuse Case (opens in a new tab)
Deserialization (opens in a new tab)
OWASP ASVS 4.0.3
V5.3.3 (opens in a new tab)
V1.5.1 (opens in a new tab)
Attack patterns
XSS Using MIME Type Mismatch (opens in a new tab)
DOM-Based XSS (opens in a new tab)
Reflected XSS (opens in a new tab)
Stored XSS (opens in a new tab)
Cross-Site Scripting (XSS) (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

jenkins.io/security/advisory/2022-09-21/ (opens in a new tab)

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 7 Jul 2025, 08:56 UTC

WeaknessesCWE-79

Technical details

References

Community reviews

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