VulnerabilityPublished 28 Mar 2024Updated 1 Aug 2024

CVE-2024-25506: Process Maker · Cross-site Scripting

Source CVE Database V5

Not known to be exploited · CVSS 6.5 Medium · fixed in 4.0 : update affected systems when convenient.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score

6.5Medium

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

EPSS: 0.3% chance of exploitation in 30 days – higher than 28% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 4.0

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: Required
Scope: Changed
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: 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: 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 28 Mar 2024
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

AI-suggested

Organizations should immediately assess their ProcessMaker deployments to determine if they are running versions prior to 4.0 and plan to upgrade to the latest version where this vulnerability is addressed. In the absence of an official patch, administrators should implement strict input validation and sanitization on cookies and user-supplied data, particularly the pm_sys_sys cookie. Employing Content Security Policy (CSP) headers can help mitigate the impact of injected scripts by restricting script execution sources. Additionally, organizations should educate users about the risks of clicking untrusted links and monitor web traffic for suspicious activity targeting ProcessMaker instances. Web Application Firewalls (WAFs) can be configured to detect and block XSS attack patterns related to cookie manipulation. Regular security audits and penetration testing focused on web application vulnerabilities should be conducted to identify and remediate similar issues proactively.

Description

Cross Site Scripting vulnerability in Process Maker, Inc ProcessMaker before 4.0 allows a remote attacker to run arbitrary code via control of the pm_sys_sys cookie.

Impact

The exploitation of CVE-2024-25506 can lead to unauthorized script execution in users' browsers, potentially resulting in session hijacking, data leakage, or unauthorized actions performed on behalf of the user. This can compromise the confidentiality and integrity of sensitive business process data managed by ProcessMaker. The availability impact is rated low but could occur if malicious scripts disrupt normal application workflows. Organizations using ProcessMaker in regulated industries or handling sensitive data face increased risk of compliance violations and reputational damage. Since the vulnerability requires user interaction and some privileges, the attack surface is somewhat limited but still significant in environments with many users or exposed web interfaces. The lack of known exploits in the wild reduces immediate risk but does not eliminate the threat, especially as attackers may develop exploits once the vulnerability is public. Overall, the vulnerability poses a medium risk to organizations worldwide that depend on ProcessMaker for workflow automation and business process management.

Summary

CVE-2024-25506 is a Cross-Site Scripting (XSS) vulnerability identified in ProcessMaker, Inc's ProcessMaker software versions prior to 4.0. This vulnerability arises from improper handling of the pm_sys_sys cookie, which an attacker can manipulate to inject malicious scripts. When exploited, the attacker can execute arbitrary code within the context of the victim's browser session, potentially leading to unauthorized actions, data theft, or session hijacking. The vulnerability requires the attacker to have some level of privileges (PR:L) and involves user interaction (UI:R), such as tricking a user into clicking a crafted link or visiting a malicious page. The CVSS 3.1 vector indicates network attack vector (AV:N), low attack complexity (AC:L), and a scope change (S:C), meaning the impact extends beyond the vulnerable component. The confidentiality, integrity, and availability impacts are all rated low but combined represent a significant risk. No patches or exploits are currently publicly available, but the vulnerability is documented and should be addressed proactively. This vulnerability falls under CWE-79, which covers improper neutralization of input leading to XSS. ProcessMaker is a widely used workflow and BPM platform, making this vulnerability relevant to organizations relying on it for business-critical processes.

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

medium.com/%40proflamyt/cve-2024-25506-425ba3212fb6 (opens in a new tab)

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Exploitation evidence

What to do

Description

AI analysisMachine-generated, updated 26 Feb 2026, 10:39 UTC

WeaknessesCWE-79

Technical details

References

Community reviews

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