CVE-2026-33136Public exploitNetwork attack vector

Reflected XSS via unencoded sccd parameter

Published Mar 20, 2026 · Updated Mar 20, 2026

Reflected XSS in WeGIA 3.6.6 and earlier allows remote attackers to execute script in a victim's browser through a crafted link. The listar_memorandos_ativos.php handler concatenates the sccd query value into a success-alert div without contextual encoding or sanitization. Exploitation requires a victim to follow the crafted link, after which script runs in that victim's session and can read session data or issue unauthorized requests.

CVSS severity9.3
Critical
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Reflected XSS in WeGIA 3.6.6 and earlier allows remote attackers to execute script in a victim's browser through a crafted link. The listar_memorandos_ativos.php handler concatenates the sccd query value into a success-alert div without contextual encoding or sanitization. Exploitation requires a victim to follow the crafted link, after which script runs in that victim's session and can read session data or issue unauthorized requests.

The record

CVE
CVE-2026-33136
Published
Mar 20, 2026
Updated
Mar 20, 2026
Vendor
LabReDeS - Laboratório de Redes, Desenvolvimento e Segurança
Product
WeGIA
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=< 3.6.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

LabReDeS - Laboratório de Redes, Desenvolvimento e Segurança · WeGIAversion=< 3.6.7

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
9.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1204.001User Execution: Malicious Link

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo