KalmarCTF 2026
Welcome to KalmarCTF 2026, brought to you by Kalmarunionen!
The competition will take place from Friday, 27 March 2026, 17:00 UTC to Sunday, 29 March 2026, 17:00 UTC. ⚠️ Note: Europe switches from Central European Time (CET, UTC+1) to Central European Summer Time (CEST, UTC+2) on Sunday, 29 March 2026. This means the start time is 18:00 CET, and the end time is 19:00 CEST local time.
Expect sweet challenges which are both original and challenging.
Discord: https://discord.gg/adQNMZRcJU
Web 6
| Challenge | Has |
|---|---|
| Aperi_et_Inveni | files |
| RootBabyKalmarCTF | files |
| customainer | files |
| varmarunionen | files |
| works_as_specified_definitely | files |
| works_as_specified_mostly | files |
Pwn 6
| Challenge | Has |
|---|---|
| Astralogy | files |
| File_Server | files |
| Flagchecking_as_a_Service | files |
| faulty | files |
| kalmar_b00tr0m | files |
| musli | files |
Reverse 4
| Challenge | Has |
|---|---|
| 0racle | files |
| Aros_25 | files |
| Linkme | files |
| flag_checker | files |
Crypto 5
| Challenge | Has |
|---|---|
| MissingNo.3 | files |
| RBG+ | files |
| monoDOOM_ETERNAL | files |
| ternarya | files |
| thousands_of_RNGs | files |
Misc 7
| Challenge | Has |
|---|---|
| EvilBabyKalmarCTF | files |
| Git_Hoarder | files |
| ReLuess_Your_Inihbitions | files |
| Wheres_Your_HEAD_At | files |
| __pyjail__ | files |
| impossible_pygolf | files |
| nix_revenge | files |