CVE-2026-3505: Unbounded PGP AEAD chunk size leads to pre-auth resource exhaustion.

Versions reported by the vendor

Affected version ranges reported by the assigning authority (bcorg). Independent of NVD's CPE analysis and usually ahead of it.

• Legion of the Bouncy Castle Inc. BC-JAVA

  • 1.74 and later · before 1.80.2affected · maven
  • 1.81 and later · before 1.81.1affected · maven
  • 1.82 and later · before 1.84affected · maven

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2025-14813GOSTCTR implementation unable to process more than 255 blocks correctly
  37Monitor
• CVE-2026-71885MLS X.509 credential not bound to the LeafNode signature key
  36Monitor
• CVE-2026-5598Non-constant time comparisons risk private key leakage in FrodoKEM.
  35Monitor

Published before and after this one in the same product

• ← EarlierCVE-2026-0636Apr 15, 2026 · LDAP Injection Vulnerability in LDAPStoreHelper.java
  22Monitor
• Later →CVE-2026-5588Apr 15, 2026 · PKIX draft CompositeVerifier accepts empty signature sequence as valid.
  25Monitor
• Later →CVE-2026-17508Oct 2, 2026 · Password-based KDF cost parameters honoured unbounded from untrusted input across the remaining PBE entry points
  21Monitor

Root cause

Code that parses nested structures sets no depth or size limit. A small input can turn into a disproportionate processing load.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1function expand(node) {2  return node.children.map(expand);3}

1const MAX_DEPTH = 32;2function expand(node, depth = 0) {3  if (depth > MAX_DEPTH) throw new Error("too deep");4  return node.children.map((c) => expand(c, depth + 1));5}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.