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Advisory record · GHSA-78vr-q6cf-c7p6

Craft Commerce: Partial Payment Amount Without Lower Bound Validation

CVSS 4.0, no score published

Published by the GitHub Advisory Database at 19 Jun 2026, 21:15 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
craftcms/commercePackagist>=5.0.0, <5.6.5 || >=4.0.0, <4.11.25.6.5, 4.11.2
Identifiers
GHSA-78vr-q6cf-c7p6 · PKSA-3cyb-p9z9-9j9r
Weakness (CWE)
CWE-20 · CWE-1284
Tags
Published
19 Jun 2026
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Craft Commerce (craftcms/commerce) versions 4.0.0 up to 4.11.2 and 5.0.0 up to 5.6.5 accept any float as a partial payment amount, with no minimum positive check. When the store has "Allow Partial Payment on Checkout" enabled, a customer can submit a zero or negative amount, which may mark an order as paid without a valid transaction, and some gateways will process $0.00 charges. The source gives few details on the exact steps and does not describe the fix beyond listing fixed versions 4.11.2 and 5.6.5, so upgrade to one of those.

Written 31 Oct 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
Not published None 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS No score.

Timeline

  1. 31 Oct 2026, 14:01 UTC First seen by agentprime
  2. 31 Oct 2026, 14:01 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.