CVE-2026-25062: Outline is a service that allows for collaborative documentation

Q: How do I fix CVE-2026-25062?

outline: upgrade to 1.4.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-25062 being exploited?

CVE-2026-25062 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-2026-25062 affect?

CVE-2026-25062 affects outline. Severity is medium (CVSS 5.5). Outline is a service that allows for collaborative documentation. Prior to 1.4.0, during the JSON import process, the value of attachments[].key from the imported JSON is passed directly to path.join(rootPath, node.key) and then read using

Q: How urgent is CVE-2026-25062?

Priority 34/100. Public exploit reference

Routine

MEDIUM 5.5UPGRADE

CVE-2026-25062 is a medium-severity flaw (CVSS 5.5) affecting outline. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Outline is a service that allows for collaborative documentation. Prior to 1.4.0, during the JSON import process, the value of attachments[].key from the imported JSON is passed directly to path.join(rootPath, node.key) and then read using fs.readFile without validation. By embedding path traversal sequences such as ../ or absolute paths, an attacker can read arbitrary files on the server and import them as attachments. This vulnerability is fixe

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.4% (top 62%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-02-11
Last modified	2026-06-17

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

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-02-11 21:16 UTCPublished CVE record published
2026-06-17 10:24 UTCUpdated Record last modified

getoutline outline UPGRADE

Affected: < 1.4.0

Fixed in: 1.4.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy outline || rpm -q outline || outline --version

2. UPGRADE to 1.4.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade outline

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade outline

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-2026-25062?

outline: upgrade to 1.4.0. Exact commands for each OS are on this page.

Is CVE-2026-25062 being exploited?

CVE-2026-25062 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-2026-25062 affect?

CVE-2026-25062 affects outline. Severity is medium (CVSS 5.5). Outline is a service that allows for collaborative documentation. Prior to 1.4.0, during the JSON import process, the value of attachments[].key from the imported JSON is passed directly to path.join(rootPath, node.key) and then read using

How urgent is CVE-2026-25062?

Priority 34/100. Public exploit reference

Related CVEs

CVE-2026-41649 HIGH 7.7 UPGRADE Outline is a service that allows for collaborative documentation
CVE-2026-44695 MEDIUM 5.8 UPGRADE Outline is a service that allows for collaborative documentation
CVE-2026-33640 CRITICAL 9.8 UPGRADE Outline is a service that allows for collaborative documentation
CVE-2026-28506 MEDIUM 4.3 UPGRADE Outline is a service that allows for collaborative documentation
CVE-2026-24901 HIGH 8.1 UPGRADE Outline is a service that allows for collaborative documentation

References

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