VulnerabilityPublished 17 Mar 2026

CVE-2026-4355: Portabilis i-Educar · Cross-site Scripting

Affects Portabilis i-EducarSource CVE Database V5

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Public exploit available · CVSS 5.1 Medium.

Data as of 30 Oct 2026, 11:34 UTC

CVSS 4.0 base score

5.1Medium

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

EPSS: 0.1% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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: Low
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: Low: The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
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 17 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 24 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
Portabilisi-Educar	Affected =2.11	Fixed in–
GitHubportabilis/i-educar`pkg:github/portabilis/i-educar`Other threats	Affected =2.11	Fixed in–

CPE configurations (1)

cpe:2.3:a:portabilis:i-educar:*:*:*:*:*:*:*:*

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AI-suggested

Given the absence of an official patch from the vendor, organizations should implement the following specific mitigations: 1) Apply strict input validation and output encoding on the 'Name' parameter at the web application or reverse proxy level to neutralize malicious scripts. 2) Deploy a Web Application Firewall (WAF) with rules targeting common XSS attack patterns, specifically tuned for i-Educar endpoints. 3) Restrict access to the /intranet/educar_servidor_curso_lst.php endpoint to trusted IP ranges or authenticated users where possible, reducing exposure. 4) Conduct user awareness training to recognize and avoid phishing attempts that exploit this vulnerability. 5) Monitor web server and application logs for suspicious requests containing script tags or unusual payloads targeting the vulnerable parameter. 6) Consider isolating or segmenting the i-Educar system within the network to limit lateral movement if compromised. 7) Regularly review and update security controls and prepare for patch deployment once the vendor releases an official fix. 8) If feasible, upgrade to a later, unaffected version of i-Educar or apply community-developed patches after thorough testing.

Description

CVE-2026-4355 is a medium severity cross-site scripting (XSS) vulnerability found in Portabilis i-Educar version 2.11, specifically in the /intranet/educar_servidor_curso_lst.php file. The vulnerability arises from improper sanitization of the 'Name' argument, allowing remote attackers to inject malicious scripts. Exploitation requires no authentication but does require user interaction, such as a victim clicking a crafted link. The vendor has not responded to disclosure attempts, and no patches are currently available. Although no known exploits are in the wild, the exploit code is publicly available, increasing the risk of attacks. This vulnerability can lead to session hijacking, credential theft, or unauthorized actions within the affected web application. Organizations using i-Educar 2.11 should prioritize mitigation to prevent exploitation.

Impact

The primary impact of CVE-2026-4355 is the potential for attackers to execute arbitrary JavaScript in the context of users accessing the vulnerable i-Educar system. This can lead to session hijacking, theft of authentication tokens, redirection to malicious websites, or unauthorized actions performed on behalf of the victim. For educational institutions, this could compromise sensitive student and staff information, disrupt administrative operations, and damage trust in the system. The vulnerability's remote exploitability and lack of authentication requirements increase its risk profile. Although the vulnerability does not directly affect system availability or integrity at a high level, the indirect consequences of successful exploitation—such as data leakage or unauthorized access—can be significant. The public availability of exploit code raises the likelihood of opportunistic attacks, especially against less-secured deployments. Organizations worldwide using i-Educar 2.11 face reputational damage, regulatory compliance issues, and potential operational disruptions if exploited.

References

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