Vulnerability Description
MIME::Parser versions before 5.521 for Perl set no limit on the number of message parts by default, allowing memory exhaustion. The max_parts option defaulted to -1, which disables the limit, so a parser created with default settings builds an entity for every part however many a message has. Version 5.521 sets max_parts to 1000 and max_depth to 64 by default. Setting either to -1 still removes the limit.
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-116273?
CVE-2026-116273 is a documented vulnerability. MIME::Parser versions before 5.521 for Perl set no limit on the number of message parts by default, allowing memory exhaustion. The max_parts option defaulted to -1, which disables the limit, so a pa...
How severe is CVE-2026-116273?
CVSS scoring is not yet available for CVE-2026-116273. Check NVD for updates.
Is there a patch for CVE-2026-116273?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.