Is there a public exploit for CVE-2026-116273?

No public exploit for CVE-2026-116273 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

— Unscored

MIME::Parser versions before 5.521 for Perl set no limit on the number of message parts by default, allowing memory exhaustion.

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. The maxparts 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 maxparts to 1000 and maxdepth to 64 by default. Setting either to -1 still removes the limit.

Assessment

CVSS: Not yet scored
Severity: Unscored
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 28 October 2026
Last updated: 29 October 2026
Weakness: CWE-1188, CWE-770
Assigner: 9b29abf9-4ab0-4765-b253-1875cd9b441e

At the source

References

https://metacpan.org/release/DSKOLL/MIME-tools-5.521/changes

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