# FEDORA-2026-A415B3BF48: perl-MIME-tools security update

FEDORA-2026-A415B3BF48, released November 7, 2026, fixes 10 CVEs in perl-MIME-tools (version 5.522-1.fc43). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/fedora-2026-a415b3bf48
- Platform: Linux
- Released: Nov 7, 2026
- Priority: High (Closes CVE-2026-116273, high severity)
- CVEs: 10, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://bodhi.fedoraproject.org/updates/FEDORA-2026-a415b3bf48

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [perl-MIME-tools](https://patchblox.com/security/data/product/linux/perl-mime-tools.md) | Fedora 43 | 5.522-1.fc43 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-116267](https://patchblox.com/security/data/cve/CVE-2026-116267.md) | High | libmime-tools-perl: MIME::Parser versions before 5.521 for Perl allow memory exhaustion via indented error messages from a truncated, dee... | 7.5 | 0.0029 |  |
| [CVE-2026-116268](https://patchblox.com/security/data/cve/CVE-2026-116268.md) | High | libmime-tools-perl: MIME::Field::ParamVal versions before 5.521 for Perl allow CPU exhaustion via unclosed comments in header parameters | 7.5 | 0.0029 |  |
| [CVE-2026-116270](https://patchblox.com/security/data/cve/CVE-2026-116270.md) | High | libmime-tools-perl: MIME::Words versions before 5.521 for Perl allow memory exhaustion via repeated "=?" sequences in decode_mimewords | 7.5 | 0.0029 |  |
| [CVE-2026-116273](https://patchblox.com/security/data/cve/CVE-2026-116273.md) | High | 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... | 7.5 | 0.0029 |  |
| [CVE-2026-116271](https://patchblox.com/security/data/cve/CVE-2026-116271.md) | High | libmime-tools-perl: MIME::Parser::FileUnder versions before 5.521 for Perl reuse a pre-created output directory and follow symlinks in it... | 7.0 | 0.0013 |  |
| [CVE-2026-116264](https://patchblox.com/security/data/cve/CVE-2026-116264.md) | Routine | libmime-tools-perl: MIME::Field::ParamVal versions before 5.521 for Perl allow one invalid Content-Type parameter to hide the parameters... | 5.3 | 0.0021 |  |
| [CVE-2026-116265](https://patchblox.com/security/data/cve/CVE-2026-116265.md) | Routine | libmime-tools-perl: MIME::Field::ParamVal versions before 5.521 for Perl do not flag an ambiguous multipart boundary written as RFC 2231... | 5.3 | 0.0021 |  |
| [CVE-2026-116266](https://patchblox.com/security/data/cve/CVE-2026-116266.md) | Routine | libmime-tools-perl: MIME::Head versions from 5.518 before 5.521 for Perl decode a partly encoded multipart boundary without flagging the... | 5.3 | 0.0021 |  |
| [CVE-2026-116269](https://patchblox.com/security/data/cve/CVE-2026-116269.md) | Routine | libmime-tools-perl: MIME::Field::ParamVal versions before 5.521 for Perl turn an RFC 2231 filename with a hyphenated language tag into an... | 5.3 | 0.0021 |  |
| [CVE-2026-116272](https://patchblox.com/security/data/cve/CVE-2026-116272.md) | Routine | libmime-tools-perl: MIME::Field::ParamVal versions before 5.521 for Perl do not flag a duplicate boundary parameter whose name contains a... | 5.3 | 0.0021 |  |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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