In JetBrains YouTrack before 2026.2.19197 reDoS attack was possible via mailbox regex mail-rule filters
Weakness
The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Youtrack | Jetbrains | * | 2026.2.19197 (excluding) |