Answer in brief
CVE-2026-128042 records a Medium severity (CVSS 6.3) vulnerability in OpenMage magento-lts before 20.19.0 Race Condition in Coupon Usage Limits. The current sources do not mark it as known exploited. The current feed maps OpenMage/magento-lts (generic), OpenMage/magento-lts (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps OpenMage/magento-lts (generic), OpenMage/magento-lts (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| OpenMage/magento-ltsgeneric | >=0 <20.19.0 | 20.19.0 |
| OpenMage/magento-ltsgeneric | >=21.0.0-beta1 <21.0.0-beta3 | 21.0.0-beta3 |
Published upstream
Nov 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 13, 2026
OpenMage magento-lts before 20.19.0 and 21.0.0-beta1 before 21.0.0-beta3 contains a race condition in shopping cart price rule usage limits, because Mage_SalesRule_Model_Validator checks coupon limits without locking and the usage counters are later incremented non-atomically. Unauthenticated attackers, including guest shoppers, can submit concurrent checkouts to redeem a limited coupon more times than its cap allows.
Quoted source text, attributed separately from HOL analysis.