Stigmem before 0.9.0a11 fails to validate the delivery_address parameter when creating webhook subscriptions, allowing authenticated users to specify internal loopback and private network destinations.
CVSS 4.0MEDIUM 5.3·Network·Low privileges·No interaction·EPSS 0.00324·Published 2026-08-19·Fixed in 0.9.0a11CWE-918
stigmem-node contains an insecure default configuration vulnerability that allows federation traffic to traverse networks without mTLS protection when non-loopback endpoints are enabled.
CVSS 4.0CRITICAL 9.1·Network·No auth·No interaction·EPSS 0.00268·Published 2026-08-19·Fixed in 0.9.0a2CWE-319
stigmem-node 0.9.0a1 accepts federation peer key material during peer registration without a separate administrator out-of-band fingerprint approval step.
CVSS 4.0CRITICAL 9.1·Network·No auth·No interaction·EPSS 0.00346·Published 2026-08-19·Fixed in 0.9.0a2CWE-295
stigmem versions before 0.9.0a12 contain a broken object level authorization vulnerability in the decay sweep endpoint that allows authenticated attackers with write credentials for one tenant to execute decay operations…
CVSS 4.0HIGH 7.2·Network·Low privileges·No interaction·EPSS 0.00364·Published 2026-08-19·Fixed in 0.9.0a12CWE-863
stigmem-node before 0.9.0a12 contains a cross-tenant broken object level authorization (BOLA) flaw in the RTBF (right-to-be-forgotten) tombstone mechanism.
CVSS 4.0HIGH 7.2·Network·Low privileges·No interaction·EPSS 0.00364·Published 2026-08-19·Fixed in 0.9.0a12CWE-639
stigmem (pip package stigmem-node) version 0.9.0a1 contains a timestamp-handling mismatch in federation peer-token validation that can cause valid peer tokens to be incorrectly treated as expired.
CVSS 4.0HIGH 7.1·Network·Low privileges·No interaction·EPSS 0.00238·Published 2026-08-19·Fixed in 0.9.0a2CWE-345