# \#propamm

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## [Security Advisory: Storage Aliasing in Priority Update Registry V1 09/15/26](https://collective.flashbots.net/t/security-advisory-storage-aliasing-in-priority-update-registry-v1-09-15-26/6030)

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**Author:** [@Quintus](https://collective.flashbots.net/u/Quintus)\
**Replies:** 0\
**Last updated:** [September 16, 2026, 1:35pm UTC](https://collective.flashbots.net/t/security-advisory-storage-aliasing-in-priority-update-registry-v1-09-15-26/6030 "2026-09-16T13:35:52Z")

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On September 15, 2026, we identified a critical vulnerability in version 1 of the Priority Update Registry, an on-chain contract that trading integrators use to publish and read price updates. The flaw let any address au…