CVE-2026-46671: Rust OneNote File Parser is a parser for Microsoft OneNote files implemented in Rust

Q: How do I fix CVE-2026-46671?

rust onenote file parser: upgrade to 1.1.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-46671 being exploited?

CVE-2026-46671 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-46671 affect?

CVE-2026-46671 affects rust onenote file parser. Severity is medium (CVSS 4.4). Rust OneNote File Parser is a parser for Microsoft OneNote files implemented in Rust. Prior to version 1.1.1, a maliciously crafted `.onetoc2` table-of-contents file can cause `Parser::parse_notebook` to open arbitrary files on the host fil

Q: How urgent is CVE-2026-46671?

Priority 21/100. On your watchlist

Routine

MEDIUM 4.4WATCHLISTUPGRADE

CVE-2026-46671 is a medium-severity flaw (CVSS 4.4) affecting rust onenote file parser. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Rust OneNote File Parser is a parser for Microsoft OneNote files implemented in Rust. Prior to version 1.1.1, a maliciously crafted `.onetoc2` table-of-contents file can cause `Parser::parse_notebook` to open arbitrary files on the host filesystem outside the notebook's directory. The parser reads entry names listed inside the `.onetoc2` and joins them against the notebook's base directory without validating that they are relative paths confined

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	4.4 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 96%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-07-20
Last modified	2026-10-24

Publisher (CNA): GitHub, Inc. · Vendor: msiemens

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-20 16:17 UTCPublished CVE record published
2026-10-24 20:10 UTCUpdated Record last modified

msiemens rust onenote file parser UPGRADE

Affected: < 1.1.1

Fixed in: 1.1.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy rust-onenote-file-parser || rpm -q rust-onenote-file-parser || rust-onenote-file-parser --version

2. UPGRADE to 1.1.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade rust-onenote-file-parser

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade rust-onenote-file-parser

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-46671?

rust onenote file parser: upgrade to 1.1.1. Exact commands for each OS are on this page.

Is CVE-2026-46671 being exploited?

CVE-2026-46671 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-46671 affect?

CVE-2026-46671 affects rust onenote file parser. Severity is medium (CVSS 4.4). Rust OneNote File Parser is a parser for Microsoft OneNote files implemented in Rust. Prior to version 1.1.1, a maliciously crafted `.onetoc2` table-of-contents file can cause `Parser::parse_notebook` to open arbitrary files on the host fil

How urgent is CVE-2026-46671?

Priority 21/100. On your watchlist

References

← Back to latest CVEs