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CVE-2026-33135· NVD / CVE Program· CNA GitHub_M

WeGIA has Reflected Cross-Site Scripting (XSS) in `novo_memorandoo.php` via `sccs` parameter

WeGIA is a web manager for charitable institutions. Versions 3.6.6 and below have a Reflected Cross-Site Scripting (XSS) vulnerability in the novo_memorandoo.php endpoint. An attacker can inject arbitrary JavaScript into the sccs GET parameter, which is directly echoed into the HTML response without any sanitization or encoding. The script /html/memorando/novo_memorandoo.php reads HTTP GET parameters to display dynamic success messages to the user. At approximately line 273, the code checks if $_GET['msg'] equals 'success'. If true, it directly concatenates $_GET['sccs'] into an HTML alert <div> and outputs it to the browser. This issue has been fixed in version 3.6.7.

MediumCVSS 6.1 · v3.1—No exploit Fix available

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Published
Mar 20, 2026
Updated
Jun 17, 2026
EPSS
0.4% · 28th percentile
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Report tools

JSON

Action score

24

Monitor

Low priority for now.

CVSS
24 / 40 · 6.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
6.1
CNA · GitHub_M
9.3
3.2 point gap

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
wegiawegia

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • wegia wegiabefore 3.6.7

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • LabRedesCefetRJ WeGIA

    • < 3.6.7affected

Same product

wegia: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-27140WeGIA vulnerable to OS Command Injection at endpoint 'importar_dump.php' parameter 'import' (RCE)
    41Plan
  • CVE-2025-26613OS Command Injection endpoint 'gerenciar_backup.php' parameter 'file' (RCE) in WeGIA
    41Plan
  • CVE-2026-28411WeGIA Vulnerable to Authentication Bypass via `extract($_REQUEST)`
    40Plan
  • CVE-2025-55169WeGIA Path Traversal at endpoint 'html/socio/sistema/download_remessa.php' via parameter 'file'
    40Plan
  • CVE-2025-53823WeGIA vulnerable to SQL Injection (Blind Time-Based) in `processa_deletar_socio.php` parameter `id_socio`
    40Plan
  • CVE-2025-53091WeGIA has Unauthenticated Time-Based Blind SQL Injection in almox Parameter
    40Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
LabRedesCefetRJ WeGIA3.6.7 · descriptionVendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-3539917 days apartWeGIA has Stored XSS in backup file names
    34Monitor
  • CVE-2025-57764211 days apartWeGIA Cross-Site Scripting (XSS) Reflected endpoint 'cargos.php' parameter 'msg_e'
    32Monitor
  • CVE-2025-57765211 days apartWeGIA Cross-Site Scripting (XSS) Reflected endpoint 'pre_cadastro_adotante.php' parameter 'msg_e'
    32Monitor
  • CVE-2024-57030427 days apartWegia < 3.2.0 is vulnerable to Cross Site Scripting (XSS) in /geral/documentos_funcionario.php via the id parameter.
    32Monitor
  • CVE-2026-4028328 days apartWeGIA has stored XSS in profile_paciente.php
    30Monitor
  • CVE-2025-55170220 days apartWeGIA reflected XSS via `verificacao` and `redir_config` param at endpoint `/html/alterar_senha.php`
    29Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
none

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality impact
Low
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

nvd-primary

Root cause

User content is inserted into the page as HTML. The browser interprets the content as code rather than data.

The bug in code

The whole CWE-79 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
commentEl.innerHTML = comment.body;

Fixed

ts
commentEl.textContent = comment.body;

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records