AIKIDO-2026-10444
deno is vulnerable to Observable Timing Discrepancy
20
Low Risk
This Affects:
denoTL;DR
The Node compatibility AES-GCM decrypt path compared the authentication tag with a plain equality check that can short-circuit on the first differing byte, leaking timing differences to an observer. An attacker who can repeatedly trigger AES-GCM decrypt and measure timing may narrow in on the expected tag. The fix compares the tag using a constant-time comparison so the check does not vary with byte-wise matches.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
deno is vulnerable to Observable Timing Discrepancy in versions 0.0.1 - 2.7.6.
How to fix this
Upgrade the deno library to the patch version.
Are You Affected?
Connect your repositories to instantly see whether vulnerable or malicious packages exist in your codebase.
Free. No credit card required.
I consent to receiving marketing communications based on Aikido’s Privacy Policy.
SOC 2Compliant
ISO 27001CompliantISO 42001Compliant
FedRAMPImplementing© All Intel data is openly available and commercially licensed.