CVE-2026-118377: mewebstudio pos

mews/pos through 2.0.0 Missing Hash Verification in 3D Pay and 3D Host Callbacks

CVSS 8.7 HighEPSS 0.0018 · 7th percentile

Published by the CVE Program (CNA: VulnCheck) at 28 Oct 2026, 02:03 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
mewebstudio	pos pkg:composer/mews/pos	affected 2.0.0 and earlier semver Other versions: unaffected

Identifiers

CVE-2026-118377

CNA

VulnCheck

Weakness (CWE)

CWE-345

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.7	High	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N	CNA (VulnCheck)Used for this record
7.5	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0018, the 7th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

28 Oct 2026, 02:03 UTC Confirmed by the CVE List
28 Oct 2026, 03:17 UTC Confirmed by NVD

Sources

References from the CNA

github.com/mewebstudio/pos/pull/305 patchissue-tracking
github.com/mewebstudio/pos/commit/7c59d42bc49483c7c54999d757cb67055d9f732a patch
github.com/mewebstudio/pos/issues/306 issue-tracking
github.com/mewebstudio/pos/blob/50ed2bfe4f8980b8b0c47996de571943fa58d7ad/src/Gateway/PayForPos.php#L135-L150 technical-description
github.com/mewebstudio/pos/blob/50ed2bfe4f8980b8b0c47996de571943fa58d7ad/src/Gateway/InterPos.php#L134-L149 technical-description
github.com/mewebstudio/pos product
www.vulncheck.com/advisories/mews-pos-through-2.0.0-missing-hash-verification-in-3d-pay-and-3d-host-callbacks third-party-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.