CVE-2026-116273 MIME::Parser versions before 5.521 for Perl set no limit on the number of message parts by default, allowing memory exhaustion.
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-116273?
CVE-2026-116273 is a vulnerability, published on 28 Oct 2026.
Official 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.
Which versions are affected by CVE-2026-116273?
How do I fix CVE-2026-116273?
No fix has been published for CVE-2026-116273 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-116273 being exploited?
There is no known exploitation of CVE-2026-116273 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-116273, GHSA-xrpv-r4cr-x2x4, UBUNTU-CVE-2026-116273.