Polygon Reveals Security Issues Patched via Recent Hard Forks

Polygon Labs Quietly Fixes Critical Security Bugs With Hard Forks

Polygon Labs revealed Wednesday that it fixed a batch of security vulnerabilities in its proof-of-stake network through two hard forks that were rolled out

Polygon Quietly Patched Security Flaws in Two Hard Forks Before Disclosing Them

The Austin and Kyoto hard forks, deployed quietly on the Bor and Heimdall clients before public disclosure, closed denial-of-service and consensus-hardening flaws that Polygon says were never exploited.

Polygon Secretly Fixed Bugs That Could Have Frozen Its Whole Chain

Polygon Labs disclosed that its Bor and Heimdall clients carried serious denial-of-service vulnerabilities, including a bug that let a single crafted transaction overload validators. The team quietly built and tested fixes before shipping them through the Austin and Kyoto hard forks, which activated on Polygon PoS mainnet on August 29, 2026, and says no funds were lost.

Polygon Reveals Security Issues Patched via Recent Hard Forks

Polygon Labs has published details of multiple security vulnerabilities that could have threatened the reliability of its Proof-of-Stake (PoS) network—after fixing the issues via two recent hard forks and then disclosing the underlying risks. According to a Thursday disclosure posted by Polygon Labs’ Validators Support Team, the flaws impacted the network’s Bor and Heimdall clients [...]

CoinStats - Polygon Reveals Security Issues Patched via R...

Polygon Labs has published details of multiple security vulnerabilities that could have threatened the reliability of its Proof-of-Stake (PoS) network—after fixing the issues via two recent hard forks and then disclosing the underlying risks. According to a Thursday disclosure posted by Polygon Labs’ Validators Support Team, the flaws impacted the network’s Bor and Heimdall clients and ranged from denial-of-service (DoS) vectors to bugs that cou…