Excessive Iteration · Common Weaknesses

The chart below shows the most common weaknesses found in vulnerabilities across the Erlang ecosystem. Understanding which weakness types recur most often helps library authors and application developers focus their security efforts where they matter most.

Each CVE is mapped to its CWE (Common Weakness Enumeration) using the MITRE CWE hierarchy. A slice's count includes every CVE reachable anywhere below it in the hierarchy, not just CVEs assigned that exact CWE — click a slice or legend row to drill into its direct children and see the same breakdown one level down.

Excessive Iteration CWE-834 CWE-834 at MITRE

The product performs an iteration or loop without sufficiently limiting the number of times that the loop is executed.

Loop with Unreachable Exit Condition ('Infinite Loop') CWE-835 3 (60.0%) Uncontrolled Recursion CWE-674 2 (40.0%) Use of Blocking Code in Single-threaded, Non-blocking Context CWE-1322 0 (0.0%)

CVEs

CVEs for Excessive Iteration CWE-834

Summary	Publication	CVE ID	Published
TLS/DTLS denial of service via unbounded recursion on cross-signed peer certificate chain	`pkg:otp/ssl` `pkg:github/erlang/otp`	CVE-2026-58227	2026-07-27
SSH SFTP server denial of service via extended channel data infinite loop	`pkg:otp/ssh` `pkg:github/erlang/otp`	CVE-2026-54886	2026-07-02
Uncontrolled recursion over deeply nested Markdown crashes the BEAM in mdex	`pkg:hex/mdex` `pkg:github/leandrocp/mdex` `pkg:hex/mdex_native` `pkg:github/leandrocp/mdex_native`	CVE-2026-54888	2026-06-29
Infinite loop in Alt-Svc header parser in hackney	`pkg:hex/hackney` `pkg:github/benoitc/hackney`	CVE-2026-47066	2026-05-25
HTTP/1 chunked decoder infinite loop on requests with trailer fields in bandit	`pkg:hex/bandit` `pkg:github/mtrudel/bandit`	CVE-2026-39806	2026-05-13

5 CVEs