Hi everyone,
We are following up with some details on the security issue that was addressed in proposal 131807. Some SNS canisters were affected by a bug in ic_cdk which is explained in this forum post.
For all impacted canisters, a proposal was adopted by the NNS to publish a new, fixed wasm to SNS-W. SNSs could then apply the fix to their canisters by continuous proposals to upgrade the SNS to the latest version.
This is a good reminder that in general SNS communities are encouraged to keep their DAO canisters up to date and apply upgrades regularly. This ensures that in urgent situations fixes can be deployed quickly.