Allocation of Resources Without Limits or Throttling Affecting org.bouncycastle:bcpg-jdk15to18 package, versions [1.71,1.85)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published4 Aug 2026
- disclosed3 Aug 2026
- creditUnknown
Introduced: 3 Aug 2026
NewCVE-2026-59648 (opens in a new tab)How to fix?
Upgrade org.bouncycastle:bcpg-jdk15to18 to version 1.85 or higher.
Overview
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the S2K.Argon2Params class and the PGPUtil.makeKeyFromPassPhrase() method, which read the one-byte OpenPGP Argon2 passes, parallelism, and memory-size exponent fields with only a default cap of memorySizeExponent <= 30 (1 TiB) and feed them straight into Argon2BytesGenerator. An attacker can exhaust memory or stall the process with up to roughly 1 TiB of allocation and heavy CPU work before any authenticity check, by embedding these Argon2 parameters in a minimal SKESK or secret-key packet that the victim attempts to decrypt with a passphrase. This requires the victim to begin passphrase-based decryption of the attacker-supplied message or key, since the cost is incurred during S2K key derivation ahead of authentication.