CVE-2026-116273

libmime-tools-perl: MIME::Parser versions before 5.521 for Perl set no limit on the number of message parts by default, allowing memory e...

CVE-2026-116273 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-116273, released November 3, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.5
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0029
21st percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
libmime-tools-perl · Debian 14 5.522-1 DEBIAN-CVE-2026-116273 Nov 3, 2026
perl-MIME-tools · Fedora 43 5.522-1.fc43 FEDORA-2026-A415B3BF48 Nov 7, 2026
perl-MIME-tools · opensuse-leap 16.0 5.522.0-bp160.1.1 OPENSUSE-SU-2026:22226-1 Nov 7, 2026

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