CVE-2026-118377
mews/pos through 2.0.0 contains an insufficient verification of data authenticity vulnerability…
- Risk score
- 50/100
- CVSS
- 7.5 v3.1
- Published
- 28 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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, a…
- Affected
- See advisory
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 7.5 high
- Remotely exploitable without logging in
References
- https://github.com/mewebstudio/pos
- https://github.com/mewebstudio/pos/blob/50ed2bfe4f8980b8b0c47996de571943fa58d7ad/src/Gateway/InterPos.php#L134-L149
- https://github.com/mewebstudio/pos/blob/50ed2bfe4f8980b8b0c47996de571943fa58d7ad/src/Gateway/PayForPos.php#L135-L150
- https://github.com/mewebstudio/pos/commit/7c59d42bc49483c7c54999d757cb67055d9f732a
- https://github.com/mewebstudio/pos/issues/306
- https://github.com/mewebstudio/pos/pull/305
- https://www.vulncheck.com/advisories/mews-pos-through-2.0.0-missing-hash-verification-in-3d-pay-and-3d-host-callbacks
Original description
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.
Last activity 28 Oct 2026. Patch Forecast updates every hour.