CVE-2025-53526Public exploitNetwork attack vector

Stored XSS via unsanitized memo subject

Published Jul 7, 2025 · Updated Jul 7, 2025

Stored XSS in the WeGIA memorandum module before 3.4.3 allows remote attackers to execute scripts in a viewer's browser via a crafted memo. verificarMemorando accepts the assunto POST field and stores it without neutralizing HTML special characters before the listing page renders it. A victim must open listar_memorandos_antigos.php; the stored payload then runs in that viewer's browser context.

CVSS severity6.4
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in the WeGIA memorandum module before 3.4.3 allows remote attackers to execute scripts in a viewer's browser via a crafted memo. verificarMemorando accepts the assunto POST field and stores it without neutralizing HTML special characters before the listing page renders it. A victim must open listar_memorandos_antigos.php; the stored payload then runs in that viewer's browser context.

The record

CVE
CVE-2025-53526
Published
Jul 7, 2025
Updated
Jul 7, 2025
Vendor
LabReDeS - Laboratório de Redes, Desenvolvimento e Segurança
Product
WeGIA
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 7, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 3.4.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

LabReDeS - Laboratório de Redes, Desenvolvimento e Segurança · WeGIAversion=< 3.4.3

Published CVSS scores

2.0GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P
6.4GitHub Security AdvisoryCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:H/SI:H/SA:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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