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CVE-2026-34210

27
FAUCET Score

CVE-2026-34210 affects wevm mppx versions prior to 0.4.11, where the `stripe/charge` payment method failed to validate Stripe's Idempotent-Replayed header. This allowed an attacker to replay a single valid payment credential to bypass subsequent payment requirements, effectively consuming unlimited resources after an initial charge. Rated 8.1 HIGH, the vulnerability has a network attack vector and high impact on integrity and availability, requiring low privileges and no user interaction. While listed as "Active" on a hot list, there is currently no evidence of active exploitation, public exploit code, or significant community discussion. Organizations using affected versions should upgrade to 0.4.11 or later.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.4.11CPE matchmatch criteria
cpe:2.3:a:wevm:mppx:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 4.0

6.0MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
HIGH
VS Availability
NONE
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.49%
Probability of exploitation in next 30 days
EPSS Percentile
39.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0049 is in the 28th percentile among its peer group of 17,822 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: mppxFixed in: 0.4.11

Vendor Advisories (1)

npmGHSA-8mhj-rffc-rcvwmedium

mppx has Stripe charge credential replay via missing idempotency check

Mar 29, 2026

References

github.com / wevm/mppx/commit/b2b1a0b60506fc71aa80b8a025084949dca1a994
Patch
github.com / wevm/mppx/releases/tag/[email protected]
Release Notes
github.com / wevm/mppx/security/advisories/GHSA-8mhj-rffc-rcvw
PatchVendor Advisory