VulnerabilityPublished 9 Mar 2026Updated 10 Mar 2026

CVE-2026-3812: itsourcecode Payroll Management System · Cross-site Scripting

Affects itsourcecode Payroll Management SystemSource CVE Database V5

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Public exploit available · CVSS 5.3 Medium.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 4.0 base score

5.3Medium

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

EPSS: 0.2% chance of exploitation in 30 days – higher than 20% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

Base metrics

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: None
User Interaction: Passive
Vulnerable system confidentiality: None
Vulnerable system integrity: Low
Vulnerable system availability: None
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Threat metrics

Exploit Maturity: POC

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

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, 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: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction: Passive: Successful exploitation of this vulnerability requires limited interaction by the targeted user with the vulnerable system and the attacker’s payload. These interactions would be considered involuntary and do not require that the user actively subvert protections built into the vulnerable system.
Vulnerable system confidentiality: None: There is no loss of confidentiality within the Vulnerable System.
Vulnerable system 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 to the Vulnerable System.
Vulnerable system availability: None: There is no impact to availability within the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.
Exploit Maturity: POC: Based on threat intelligence sources each of the following must apply: · Proof-of-concept is publicly available · No knowledge of reported attempts to exploit this vulnerability · No knowledge of publicly available solutions used to simplify attempts to exploit the vulnerability

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 9 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
CVSS exploit maturity: proof of concept public
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), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 30 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.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), 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
itsourcecodePayroll Management System	Affected =1.0	Fixed in–

CPE configurations (1)

cpe:2.3:a:itsourcecode:payroll_management_system:*:*:*:*:*:*:*:*

AI-suggested

To mitigate CVE-2026-3812, organizations should first check for any official patches or updates from itsourcecode and apply them immediately once available. In the absence of patches, implement strict input validation and output encoding on the 'ID' parameter within /manage_employee_allowances.php to neutralize malicious scripts. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. Additionally, enable HttpOnly and Secure flags on session cookies to reduce the risk of session hijacking. Conduct regular security audits and penetration testing focused on input validation vulnerabilities. Educate users about the risks of clicking unknown or suspicious links to reduce the likelihood of successful social engineering. Consider deploying Web Application Firewalls (WAFs) with rules tailored to detect and block XSS attack patterns targeting this parameter. Finally, monitor logs for unusual activity that may indicate exploitation attempts.

Description

A vulnerability was determined in itsourcecode Payroll Management System 1.0. Affected is an unknown function of the file /manage_employee_allowances.php. This manipulation of the argument ID causes cross site scripting. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized.

Impact

The primary impact of CVE-2026-3812 is the compromise of user sessions and potential unauthorized access to sensitive payroll information. Attackers exploiting this XSS vulnerability can execute arbitrary scripts in the context of authenticated users, potentially leading to theft of credentials, session tokens, or manipulation of payroll data. This could result in financial fraud, privacy violations, and reputational damage for affected organizations. Since the vulnerability is remotely exploitable without authentication, it broadens the attack surface significantly. However, the requirement for user interaction limits automated exploitation. The vulnerability does not directly affect system availability or integrity at a high level but can indirectly cause operational disruptions if attackers leverage stolen credentials or escalate privileges. Organizations handling sensitive employee payroll data are particularly at risk, as exposure could lead to regulatory non-compliance and legal consequences.

Summary

CVE-2026-3812 is a cross-site scripting (XSS) vulnerability identified in the itsourcecode Payroll Management System version 1.0. The flaw exists in an unspecified function within the /manage_employee_allowances.php file, where the 'ID' parameter is not properly sanitized or validated. This allows an attacker to inject malicious JavaScript code remotely by manipulating the 'ID' argument. The vulnerability can be exploited without any authentication, and no privileges are required, although user interaction is necessary to trigger the malicious payload, typically by convincing a user to click a crafted link or visit a malicious page. The vulnerability could enable attackers to execute arbitrary scripts in the context of the victim’s browser session, potentially leading to session hijacking, theft of sensitive payroll data, or unauthorized actions performed on behalf of the user. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), user interaction required (UI:P), and limited impact on confidentiality (VC:N), integrity (VI:L), and no impact on availability (VA:N). Although no patches or fixes have been linked yet, the public disclosure of the vulnerability increases the risk of exploitation. Organizations using this payroll system should be aware of the risk and implement mitigations promptly.

References

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