What is CVE-2025-9104?

CVE-2025-9104 is a low-severity vulnerability in Portabilis I-Diario, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2025-08-18.

How severe is CVE-2025-9104?

Low severity. CVSS v3 base score is 3.5 out of 10.

Is CVE-2025-9104 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Portabilis I-Diario

CVE-2025-9104

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.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2025-08-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (19.9th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

Portabilis I-Diario — versions 1.0, 1.1, 1.2

Weakness classification (CWE)

Public proof-of-concept exploits

References

vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
github.com/marcelomulder/CVE/blob/main/i-diario/CVE-2025-9104.md (related, Exploit, Third Party Advisory)
github.com/marcelomulder/CVE/blob/main/i-diario/Stored XSS endpoint planos-de-a… (exploit, broken-link, Broken Link)

Frequently asked questions

What is CVE-2025-9104?: CVE-2025-9104 is a low-severity vulnerability in Portabilis I-Diario, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2025-08-18.
How severe is CVE-2025-9104?: Low severity. CVSS v3 base score is 3.5 out of 10.
Is CVE-2025-9104 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.