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CVE

CVE-2026-34210

mppx has Stripe charge credential replay via missing idempotency check
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CVE

CVE-2026-34210

mppx has Stripe charge credential replay via missing idempotency check

Impact

The stripe/charge payment method did not check Stripe's Idempotent-Replayed response header when creating PaymentIntents. An attacker could replay a valid credential containing the same spt token against a new challenge, and the server would accept the replayed Stripe PaymentIntent as a new successful payment without actually charging the customer again. This allowed an attacker to pay once and consume unlimited resources by replaying the credential.

Patches

Fixed in 0.4.11. The server now checks the Idempotent-Replayed header and rejects replayed PaymentIntents.

Workarounds

There are no workarounds available for this vulnerability.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
6
-
4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/wevm/mppx/security/advisories/GHSA-8mhj-rffc-rcvw, https://nvd.nist.gov/vuln/detail/CVE-2026-34210, https://github.com/wevm/mppx/commit/b2b1a0b60506fc71aa80b8a025084949dca1a994, https://github.com/wevm/mppx, https://github.com/wevm/mppx/releases/tag/mppx%400.4.11, https://github.com/wevm/mppx/releases/tag/mppx@0.4.11

Severity

8.1

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
8.1
EPSS Probability
0.0002%
EPSS Percentile
0.05533%
Introduced Version
0
Fix Available
0.4.11

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