Resource Exhaustion Vulnerability in Bouncy Castle BC-JAVA by Legion of the Bouncy Castle Inc.
CVE-2026-3505

8.7HIGH

Key Information:

Vendor

Legion Of The Bouncy Castle Inc.

Status
Bc-java
Vendor
CVE Published:
15 April 2026

What is CVE-2026-3505?

A resource exhaustion vulnerability exists in Bouncy Castle BC-JAVA due to the unbounded allocation of PGP AEAD (Authenticated Encryption with Associated Data) chunk sizes. This flaw allows attackers to exploit the system, potentially leading to resource depletion before authentication takes place. Users are encouraged to update to version 1.84 or later to mitigate the risk associated with this vulnerability.

Affected Version(s)

BC-JAVA all 1.74 < 1.84

References

https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2...
vendor-advisory
https://github.com/bcgit/bc-java/commit/dc7530939ffb6cdb5...
patch

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Disclosure <disclosure@aisle.com>
.