CVE-2026-118377: high-severity vulnerability in mewebstudio pos
mews/pos through 2.0.0 Missing Hash Verification in 3D Pay and 3D Host Callbacks
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.2%
mews/pos through 2.0.0 contains an insufficient verification of data authenticity vulnerability that allows unauthenticated attackers to forge payment results by submitting unverified callbacks. GarantiPos, PayForPos and InterPos 3D Pay and 3D Host handlers skip check3DHash(), letting attackers post tampered status, amount or order ID fields to complete orders without paying.
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
Affected products
mewebstudio · posReferences
https://github.com/mewebstudio/poshttps://github.com/mewebstudio/pos/blob/50ed2bfe4f8980b8b0c47996de571943fa58d7ad/src/Gateway/InterPos.php#L134-L149https://github.com/mewebstudio/pos/blob/50ed2bfe4f8980b8b0c47996de571943fa58d7ad/src/Gateway/PayForPos.php#L135-L150https://github.com/mewebstudio/pos/commit/7c59d42bc49483c7c54999d757cb67055d9f732ahttps://github.com/mewebstudio/pos/issues/306https://github.com/mewebstudio/pos/pull/305https://www.vulncheck.com/advisories/mews-pos-through-2.0.0-missing-hash-verification-in-3d-pay-and-3d-host-callbacks