CVE-2026-128042: OpenMage magento-lts · Race Condition
Affects OpenMage magento-ltsSource CVE Database V5
Not known to be exploited · CVSS 6.3 Medium : upgrade to 20.19.0 when convenient.
Data as of 13 Nov 2026, 09:59 UTC
Thin evidence
One scorer or none| CNA (VulnCheck) | CVSS 4.0 | 6.3 |
|---|---|---|
| CNA (VulnCheck) | CVSS 3.1 | 3.7 |
- Patch
- Available – fixed in 20.19.0, 21.0.0-beta3
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 13 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.
What to do
Upgrade magento-lts to 20.19.0; magento-lts to 21.0.0-beta3; openmage/magento-lts to 21.0.0-beta3 or 20.19.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| OpenMagemagento-lts | Affected
| Fixed in
|
| OpenMagemagento-lts | Affected
| Fixed in
|
GitHubopenmage/magento-ltspkg:github/openmage/magento-ltsOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
The issue is fixed in OpenMage magento-lts versions 20.19.0 and 21.0.0-beta3. Users should upgrade to these or later versions to remediate the vulnerability. No additional mitigations are indicated by the vendor advisory.
Description
OpenMage magento-lts versions before 20.19.0 and 21.0.0-beta3 contain a race condition in the shopping cart price rule usage limits. This flaw allows unauthenticated attackers, including guest shoppers, to exploit concurrent checkouts to redeem limited-use coupons more times than intended. The issue arises because the coupon usage counters are checked and incremented without proper synchronization, leading to improper enforcement of coupon limits.
References
- github.com/OpenMage/magento-lts/security/advisories/GHSA-5rg7-22cv-c9q6 (opens in a new tab)
- github.com/OpenMage/magento-lts/commit/2626f027a752cda004c5cf7f8f9bd3cf52f525f2 (opens in a new tab)
- vulncheck.com/advisories/openmage-magento-lts-before-20.19.0-race-condition-in-coupon-usage-limits (opens in a new tab)