VulnerabilityPublished 18 Aug 2025

CVE-2025-9104: 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 implement immediate compensating controls while awaiting official patches. These include: 1) Applying web application firewall (WAF) rules to detect and block suspicious input patterns targeting the vulnerable parameters. 2) Conducting user awareness training to recognize phishing attempts that may deliver malicious links exploiting this XSS. 3) Implementing Content Security Policy (CSP) headers to restrict execution of unauthorized scripts in browsers. 4) Reviewing and sanitizing all user-supplied input on the affected pages if custom modifications are possible. 5) Monitoring logs for unusual activity related to the vulnerable endpoints. 6) Isolating or restricting access to the affected application components where feasible. 7) Engaging with Portabilis or community forums for any unofficial patches or workarounds. 8) Planning for rapid deployment of patches once available. These measures go beyond generic advice by focusing on immediate, practical steps tailored to the vulnerability's nature and the affected environment.

Description

A flaw has been found in Portabilis i-Diario up to 1.5.0. The affected element is an unknown function of the file /planos-de-aulas-por-disciplina/ of the component Informações Adicionais Page. This manipulation of the argument Parecer/Objeto de Conhecimento/Habilidades causes cross site scripting. Remote exploitation of the attack is possible. The exploit has been published and may 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 software for managing lesson plans and related academic information, this vulnerability poses a moderate risk. Successful exploitation could allow attackers to execute arbitrary scripts in the context of the victim's browser, potentially stealing session cookies, impersonating users, or delivering malware. This could lead to unauthorized access to sensitive student or staff data, reputational damage, and disruption of educational activities. Since the vulnerability requires user interaction, phishing campaigns targeting staff or students could be a vector. The lack of vendor response and absence of patches increases exposure time. Additionally, compliance with GDPR mandates protection of personal data, and exploitation of this vulnerability could lead to data breaches with regulatory consequences. The impact is heightened in environments where i-Diario is integrated with other systems or where users have elevated privileges.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 18 Aug 2025, 04:17 UTC

Technical details

References

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