CVE-2026-41244 Mojic: Observable Timing Discrepancy in HMAC Verification
An attacker can bypass file integrity checks in Mojic by exploiting timing discrepancies in HMAC verification, potentially allowing tampered code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-41244?
CVE-2026-41244 is a medium-severity vulnerability in notamitgamer mojic, published on 24 Apr 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Mojic is a CLI tool to transform readable C code into an unrecognizable chaotic stream of emojis. Prior to 2.1.4, the CipherEngine uses a standard equality operator (!==) to verify the HMAC-SHA256 integrity seal during the decryption phase. This creates an Observable Timing Discrepancy (CWE-208), allowing a potential attacker to bypass the file integrity check via a timing attack. This vulnerability is fixed in 2.1.4.
Weakness: CWE-208
Which versions are affected by CVE-2026-41244?
2 open source packages ship an affected version, including mojic.
| Package | Affected | Fixed in |
|---|---|---|
mojic npm | All versions | 2.1.4 |
mojic npm | All versions | 2.1.4 |
How do I fix CVE-2026-41244?
Upgrade mojic to 2.1.4 or later.
Is CVE-2026-41244 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-41244 exists.
Sources
Also known as GHSA-wqq3-wfmp-v85g.