CVE-2025-59350: dragonflyoss dragonfly Observable Timing Discrepancy

Vulnerability summary

CVE-2025-59350 is a medium (CVSS 5.3) Observable Timing Discrepancy vulnerability in dragonflyoss dragonfly. EPSS estimates a 0.34% chance of exploitation in the next 30 days, higher than 25.6% of scored vulnerabilities.

Timeline

1. 17-09-2025
   PublishedVulnerability first disclosed.
2. 18-09-2025
   Last modifiedVulnerability information updated.

Description

Dragonfly is an open source P2P-based file distribution and image acceleration system. Prior to 2.1.0, the access control mechanism for the Proxy feature uses simple string comparisons and is therefore vulnerable to timing attacks. An attacker may try to guess the password one character at a time by sending all possible characters to a vulnerable mechanism and measuring the comparison instruction’s execution times. This vulnerability is fixed in 2.1.0.

• CWE-208Observable Timing DiscrepancyTwo separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.