Allocation of Resources Without Limits or Throttling Affecting org.bouncycastle:bcprov-debug-lts8on package, versions [,2.73.12)
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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- published5 Aug 2026
- disclosed3 Aug 2026
- creditUnknown
Introduced: 3 Aug 2026
NewCVE-2026-58063 (opens in a new tab)How to fix?
Upgrade org.bouncycastle:bcprov-debug-lts8on to version 2.73.12 or higher.
Overview
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the engineLoad() method of BcFKSKeyStoreSpi, which reads HMAC PBKDF2 or scrypt cost parameters from a keystore's integrity structures and runs key derivation before MAC verification, with PBKDF2 rejecting only a zero iteration count and scrypt enforcing no cost limit. An attacker can consume CPU for minutes to hours or allocate gigabytes of memory by supplying a .bcfks file that declares a large iteration count, up to 2^31-1, or large scrypt N/r values. This requires the application to load an attacker-supplied or modifiable .bcfks keystore, and the cost is incurred before the MAC mismatch is detected.