Link to similar forum post that was resolved regarding a similar issue with Thorns and corruption:
https://forums.ashesofcreation.com/discussion/62518/thorns-causes-combatant-status-corruption-loophole
When: Within 15min of late night server shutdown on 4/5/2025
Where: Aithanahr Node on Lyneth
What Happened: I was at the Storage NPC in Aithanahr. While putting away spoiled from grinding mobs for a few hours and to be in a "safe place" while the servers were down. A player named Drasidos used what I assume to be a Fighter AoE ability on everyone around the Storage NPC. This triggered my Thorns buff to damage them, which then caused the town Guards to obliterate me rather thoroughly. I was able to return to the storage and recover items dropped by my ashes thanks to the same guard hovering over them. but I do have a screenshot of my in game Log Message Window below and highlighted when the shenanigans started.