VulnerabilityPublished 8 Feb 2026Updated 23 Feb 2026

CVE-2026-2156: code-projects Online Student Management System · Cross-site Scripting

Affects code-projects Online Student Management SystemSource CVE Database V5

Public exploit available · CVSS 4.8 Medium.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 4.0 base score

4.8Medium

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

EPSS: 0.2% chance of exploitation in 30 days – higher than 14% 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 8 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 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
code-projectsOnline Student Management System	Affected =1.0	Fixed in–

AI-suggested

To mitigate CVE-2026-2156, organizations should first seek and apply any official patches or updates from the vendor once available. In the absence of patches, implement strict input validation and output encoding on all user-supplied data within the Announcement Management Module to prevent script injection. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts. Limit access to the vulnerable module by enforcing strong authentication and role-based access controls, ensuring only trusted administrators can reach the affected page. Educate users about the risks of clicking untrusted links or submitting unverified content. Monitor logs for suspicious activities related to the announcement functionality. Additionally, consider deploying web application firewalls (WAFs) with rules tailored to detect and block XSS payloads targeting this endpoint. Regularly audit and review application code for similar vulnerabilities to prevent future occurrences.

Description

A weakness has been identified in code-projects Online Student Management System 1.0. The impacted element is an unknown function of the file /admin/announcement/index.php?view=add of the component Announcement Management Module. This manipulation causes cross site scripting. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks.

Impact

The primary impact of CVE-2026-2156 is on the confidentiality and integrity of data within the affected Online Student Management System. Successful exploitation could allow attackers to execute arbitrary scripts in the context of authenticated users, leading to session hijacking, theft of sensitive information such as student records, or unauthorized administrative actions. This could result in data breaches, reputational damage, and potential regulatory non-compliance for educational institutions. The vulnerability does not affect system availability directly but could be leveraged as part of broader attacks. Since exploitation requires authenticated access and user interaction, the attack surface is somewhat limited; however, the availability of public exploit code increases the risk of targeted attacks. Organizations relying on this system without proper mitigations may face increased risk of compromise, especially if user credentials are weak or reused. The impact is particularly critical in environments where student data privacy is strictly regulated.

Summary

CVE-2026-2156 identifies a cross-site scripting (XSS) vulnerability in the code-projects Online Student Management System version 1.0, specifically within the Announcement Management Module located at /admin/announcement/index.php?view=add. The vulnerability arises from insufficient sanitization or validation of user-supplied input in an unknown function of this module, allowing attackers to inject malicious JavaScript code. This injected script can execute in the context of authenticated users who access the vulnerable page, potentially leading to session hijacking, credential theft, or unauthorized actions performed on behalf of the user. The attack vector is remote, but exploitation requires the attacker to have authenticated access (PR:H) and user interaction (UI:P), such as tricking a user into clicking a crafted link or submitting malicious input. The CVSS 4.0 base score is 4.8 (medium severity), reflecting the moderate impact on confidentiality and integrity, with no impact on availability. The vulnerability does not require privileges beyond authenticated user access, and no scope change occurs. Although no known exploits are currently active in the wild, public exploit code has been released, increasing the likelihood of exploitation attempts. The absence of patches or official fixes at the time of publication means organizations must implement interim mitigations to reduce risk. This vulnerability is significant for educational institutions using this specific student management system, as it could compromise sensitive student and administrative data.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 23 Feb 2026, 21:37 UTC

Technical details

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