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.

Observable Discrepancy CWE-203 CWE-203 at MITRE

The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.

CVEs

CVEs for Observable Discrepancy CWE-203

Summary Publication CVE ID Published
Timing side-channel in pure-Erlang X25519 scalar multiplication leaks the private key in jose CVE-2026-65630 2026-10-26
Bleichenbacher padding oracle in RSAES-PKCS1-v1_5 decryption in jose CVE-2026-65626 2026-10-26
SFTP REALPATH path-existence oracle allowing filesystem enumeration outside configured root
Erlang / ssh
CVE-2026-53422 2026-07-02
SSH server timing side-channel in ssh_auth:check_password/3 allows unauthenticated username enumeration
Erlang
Erlang / ssh
CVE-2026-48859 2026-06-10
4 CVEs