CVE-2026-5106VulnerabilityPublished 30 Mar 2026

CVE-2026-5106: code-projects Exam Form Submission · Cross Site Scripting

Affects code-projects Exam Form SubmissionSource CVE Database V5

Not known to be exploited · CVSS 4.8 Medium.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 4.0 base score

4.8Medium

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

EPSS: 0.1% chance of exploitation in 30 days – higher than 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/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: High
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: High: The attacker requires privileges that provide significant (e.g., administrative) control over the vulnerable system allowing full access to the vulnerable system’s settings and files.
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 30 Mar 2026
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 2026-10-25.

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
code-projectsExam Form Submission	Affected =1.0	Fixed in–

CPE configurations (1)

cpe:2.3:a:code-projects:exam_form_submission:*:*:*:*:*:*:*:*

AI-suggested

To mitigate CVE-2026-5106, organizations should first check for any official patches or updates from the vendor and apply them promptly once available. In the absence of an official patch, implement input validation and output encoding on the 'sname' parameter within the /admin/update_fst.php script to neutralize malicious scripts. Employ web application firewalls (WAFs) with rules designed to detect and block XSS payloads targeting this parameter. Restrict access to the /admin/ directory through network segmentation, VPNs, or IP whitelisting to limit exposure to trusted users only. Educate users about the risks of clicking suspicious links and encourage cautious behavior to reduce the chance of successful user interaction exploitation. Regularly audit and monitor web server logs for unusual requests targeting the vulnerable endpoint. Consider deploying Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers accessing the application. Finally, plan to upgrade to a newer, secure version of the software once available or consider alternative solutions if the vendor does not provide timely remediation.

Description

A flaw has been found in code-projects Exam Form Submission 1.0. The impacted element is an unknown function of the file /admin/update_fst.php. Executing a manipulation of the argument sname can lead to cross site scripting. It is possible to launch the attack remotely. The exploit has been published and may be used.

Impact

The impact of CVE-2026-5106 on organizations can be significant, particularly for those relying on the vulnerable Exam Form Submission software for managing exam-related data. Successful exploitation allows attackers to execute arbitrary scripts in users' browsers, potentially leading to session hijacking, theft of sensitive information, or unauthorized actions performed on behalf of the victim. This can undermine the integrity of exam data, disrupt administrative processes, and damage organizational reputation. Although the vulnerability does not directly affect system availability or cause data loss, the confidentiality and integrity of user sessions and data are at risk. Educational institutions and administrative bodies using this software may face compliance issues if sensitive student or exam data is exposed. The remote exploitability and published proof-of-concept increase the likelihood of targeted attacks, especially if the software is exposed to the internet without adequate protections. Organizations with limited IT security resources or lacking timely patch management processes are particularly vulnerable.

Summary

CVE-2026-5106 is a cross-site scripting (XSS) vulnerability identified in the code-projects Exam Form Submission software, version 1.0. The vulnerability resides in the /admin/update_fst.php script, where the 'sname' parameter is improperly sanitized or validated, allowing an attacker to inject malicious JavaScript code. This injection occurs when the application processes the 'sname' input without adequate encoding or filtering, enabling the execution of arbitrary scripts in the context of the victim's browser. The attack vector is remote and does not require prior authentication, although user interaction is necessary to trigger the malicious payload, such as clicking a crafted URL or submitting manipulated form data. The vulnerability can lead to session hijacking, defacement, or redirection to malicious sites, compromising confidentiality and integrity of user data. The CVSS 4.8 score reflects a medium severity, considering the ease of exploitation (low complexity), no privileges required, but requiring user interaction. No patches have been officially released yet, and no known exploits are actively observed in the wild, but a proof-of-concept exploit has been published, increasing the risk of future attacks. The vulnerability affects only version 1.0 of the Exam Form Submission product, which is used primarily in educational or administrative environments that rely on this software for exam form processing.

References

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