Bouncy Castle for Java X.500 DN Escaping <1.85/2.73.12/2.1.3 (Quadratic-time)
CVE-2026-58059 Published on August 3, 2026
Quadratic-time escaping when stringifying X.500 distinguished names
In Bouncy Castle for Java before 1.85, Quadratic-time escaping when stringifying X.500 distinguished names. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bc-fips 1.0.2.7 (1.0.X series), 2.0.2 (2.0.X series) and 2.1.3 (2.1.X series).
Vulnerability Analysis
CVE-2026-58059 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
Inefficient Algorithmic Complexity
An algorithm in a product has an inefficient worst-case computational complexity that may be detrimental to system performance and can be triggered by an attacker, typically using crafted manipulations that ensure that the worst case is being reached.
Affected Versions
Legion of the Bouncy Castle Inc. BC-JAVA:- Before 1.85 is affected.
- Version 2.73.0 and below 2.73.12 is affected.
- Version 1.0.0 and below 1.0.2.7 is affected.
- Version 2.0.0 and below 2.0.2 is affected.
- Version 2.1.0 and below 2.1.3 is affected.