CWE-757
Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')
A protocol or its implementation supports interaction between multiple actors and allows those actors to negotiate which algorithm should be used as a protection mechanism such as encryption or authentication, but it does not select the strongest algorithm that is available to both parties.
Impactr finds and proves whether CWE-757 — or flaws like it — are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.