CVE-2026-44826Public exploitNetwork attack vector

Negative-total order creation via unchecked cart quantity

Published May 15, 2026 · Updated May 15, 2026

Improper quantity validation in givanz Vvveb before 1.0.8.2 allows remote attackers to create negative-total orders through the cart. The system/cart/cart.php add method accepts a negative quantity, propagates its sign through pricing and tax calculations, and persists the resulting negative grand total at checkout. Default guest carts require no authentication or special configuration, exposing merchant order and accounting data to unauthorized modification.

CVSS severity7.5
High
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper quantity validation in givanz Vvveb before 1.0.8.2 allows remote attackers to create negative-total orders through the cart. The system/cart/cart.php add method accepts a negative quantity, propagates its sign through pricing and tax calculations, and persists the resulting negative grand total at checkout. Default guest carts require no authentication or special configuration, exposing merchant order and accounting data to unauthorized modification.

The record

CVE
CVE-2026-44826
Published
May 15, 2026
Updated
May 15, 2026
Vendor
givanz
Product
Vvveb
Classifications
CWE-1284, T1565.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 15, 2026CVE publishedPublication date reported by the CVE source.
  2. May 15, 2026Record 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=< 1.0.8.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

givanz · Vvvebversion=< 1.0.8.2

Published CVSS scores

7.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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.

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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-1284Improper Validation of Specified Quantity in Input
T1565.001Stored Data Manipulation

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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