CVE-2026-65063: CWE-732 Incorrect Permission Assignment for Critical Resource in EGOR Data::RadixTree::Shared
Data::RadixTree::Shared versions prior to 0.02 for Perl create a memory-mapped file with overly permissive permissions (world-readable) and open it without safeguards against symlink attacks or race conditions. This allows local users to read inter-process communication data and potentially exploit pre-creation or symlink redirection attacks. The vulnerability arises from the use of open() with mode 0666 and missing O_EXCL and O_NOFOLLOW flags.
AI Analysis
Technical Summary
The vulnerability in Data::RadixTree::Shared (versions before 0.02) involves incorrect permission assignment and unsafe file opening practices for the mmap backing file. The file is created with mode 0666, resulting in a world-readable file (typically 0644 after umask). The open call lacks O_EXCL and O_NOFOLLOW flags, allowing an attacker to plant a symlink or file at the target path to redirect or win a pre-creation race condition. Since the shared segment resides in shared directories like /tmp or /dev/shm, any local user can read sensitive IPC payloads, leading to confidentiality loss. This is categorized under CWE-732 (Incorrect Permission Assignment) and CWE-59 (Link Following).
Potential Impact
Local attackers can read sensitive inter-process communication data due to world-readable permissions on the mmap backing file. They can also exploit race conditions or symlink redirection to influence the file opened by the application. The impact is limited to confidentiality loss; integrity and availability are not affected. The CVSS score is 3.8 (low severity) reflecting the local attack vector and limited impact.
Mitigation Recommendations
No official patch or remediation is currently confirmed. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should avoid running the vulnerable versions in environments where untrusted local users have access to the shared directories used by Data::RadixTree::Shared. Consider restricting permissions on the directory or using alternative IPC mechanisms that enforce stricter file permissions and safe file opening flags.
CVE-2026-65063: CWE-732 Incorrect Permission Assignment for Critical Resource in EGOR Data::RadixTree::Shared
Description
Data::RadixTree::Shared versions prior to 0.02 for Perl create a memory-mapped file with overly permissive permissions (world-readable) and open it without safeguards against symlink attacks or race conditions. This allows local users to read inter-process communication data and potentially exploit pre-creation or symlink redirection attacks. The vulnerability arises from the use of open() with mode 0666 and missing O_EXCL and O_NOFOLLOW flags.
CVSS v3.1
Score 3.8low
Affected software
pkg:github/Data-RadixTree-SharedRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in Data::RadixTree::Shared (versions before 0.02) involves incorrect permission assignment and unsafe file opening practices for the mmap backing file. The file is created with mode 0666, resulting in a world-readable file (typically 0644 after umask). The open call lacks O_EXCL and O_NOFOLLOW flags, allowing an attacker to plant a symlink or file at the target path to redirect or win a pre-creation race condition. Since the shared segment resides in shared directories like /tmp or /dev/shm, any local user can read sensitive IPC payloads, leading to confidentiality loss. This is categorized under CWE-732 (Incorrect Permission Assignment) and CWE-59 (Link Following).
Potential Impact
Local attackers can read sensitive inter-process communication data due to world-readable permissions on the mmap backing file. They can also exploit race conditions or symlink redirection to influence the file opened by the application. The impact is limited to confidentiality loss; integrity and availability are not affected. The CVSS score is 3.8 (low severity) reflecting the local attack vector and limited impact.
Mitigation Recommendations
No official patch or remediation is currently confirmed. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should avoid running the vulnerable versions in environments where untrusted local users have access to the shared directories used by Data::RadixTree::Shared. Consider restricting permissions on the directory or using alternative IPC mechanisms that enforce stricter file permissions and safe file opening flags.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- CPANSec
- Date Reserved
- 2026-07-21T15:29:37.116Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a5fcbb72a4a8d5989ac73b0
Added to database: 07/21/2026, 19:42:47 UTC
Last enriched: 07/30/2026, 05:29:31 UTC
Last updated: 09/04/2026, 22:52:14 UTC
Views: 60
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