VulnerabilityPublished 18 Aug 2025

CVE-2025-9106: Portabilis i-Diario · Cross-site Scripting

Affects Portabilis i-DiarioSource CVE Database V5

Public exploit available · CVSS 5.1 Medium.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 4.0 base score

5.1Medium

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

EPSS: 0.3% chance of exploitation in 30 days – higher than 23% 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 18 Aug 2025
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
Portabilis i-Diario	Affected 1.0 – 1.5.0 6 affected builds	Fixed in–

AI-suggested

Organizations should immediately implement input validation and output encoding controls at their application or web server level as a temporary mitigation. Web Application Firewalls (WAFs) can be configured to detect and block suspicious payloads targeting the vulnerable parameters (Parecer, Conteúdos, Objetivos). User awareness training should be enhanced to reduce the risk of phishing or social engineering attacks exploiting this vulnerability. Monitoring and logging of web application traffic should be increased to detect potential exploitation attempts. If possible, organizations should consider upgrading to a newer, unaffected version of i-Diario once available or applying custom patches to sanitize inputs. Isolating the affected component or restricting access to trusted users can reduce exposure. Regular backups and incident response plans should be reviewed and updated to prepare for potential exploitation scenarios.

Description

A vulnerability was found in Portabilis i-Diario up to 1.5.0. This affects an unknown function of the file /planos-de-ensino-por-disciplina/ of the component Informações Adicionais Page. Performing manipulation of the argument Parecer/Conteúdos/Objetivos results in cross site scripting. The attack is possible to be carried out remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

Impact

For European organizations using Portabilis i-Diario, particularly educational institutions that rely on this platform for managing teaching plans and related academic content, this vulnerability poses a moderate risk. Successful exploitation could allow attackers to execute malicious scripts in the browsers of educators, students, or administrators, potentially leading to theft of session cookies, unauthorized actions on behalf of users, or distribution of malware. This could disrupt educational activities, compromise user privacy, and damage institutional reputation. Since the vulnerability requires user interaction, phishing or social engineering campaigns targeting users of the platform could be effective. The absence of a vendor patch and public disclosure increases the urgency for mitigation. Additionally, given the sensitive nature of educational data and the increasing focus on data protection under GDPR, any compromise could have regulatory and compliance implications for European entities.

Summary

CVE-2025-9106 is a cross-site scripting (XSS) vulnerability identified in the Portabilis i-Diario application, specifically affecting versions up to 1.5.0. The vulnerability resides in the component handling the /planos-de-ensino-por-disciplina/ path, within the Informações Adicionais Page. The flaw arises from improper sanitization or validation of user-supplied input in the parameters Parecer, Conteúdos, and Objetivos. An attacker can remotely craft malicious input to these parameters, which is then reflected in the web page without adequate encoding or filtering, enabling execution of arbitrary JavaScript code in the context of the victim's browser. The vulnerability requires low privileges (PR:L) and user interaction (UI:P), meaning an attacker must trick a user into clicking a crafted link or visiting a malicious page. The CVSS 4.0 base score is 5.1 (medium severity), reflecting network attack vector, low attack complexity, no privileges required, but user interaction needed, and limited impact on confidentiality and integrity. The vendor has been contacted but has not responded or issued a patch, and no known exploits are currently observed in the wild. However, the exploit details have been publicly disclosed, increasing the risk of exploitation. XSS vulnerabilities can lead to session hijacking, credential theft, defacement, or redirection to malicious sites, impacting users and the integrity of the affected web application. The lack of vendor response and patch availability increases exposure for organizations using i-Diario versions up to 1.5.0.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 18 Aug 2025, 05:02 UTC

Technical details

References

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