CVE-2026-44695: Outline is a service that allows for collaborative documentation

Q: How do I fix CVE-2026-44695?

outline: upgrade to 1.7.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-44695 being exploited?

CVE-2026-44695 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-2026-44695 affect?

CVE-2026-44695 affects outline. Severity is medium (CVSS 5.8). Outline is a service that allows for collaborative documentation. Prior to 1.7.1, the Slack integration callback for GET /auth/slack.post accepts an unsigned, session-independent OAuth state value. A third party who can obtain a Slack OAuth

Q: How urgent is CVE-2026-44695?

Priority 26/100. Public exploit reference

Routine

MEDIUM 5.8UPGRADE

CVE-2026-44695 is a medium-severity flaw (CVSS 5.8) 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 1.7.1, the Slack integration callback for GET /auth/slack.post accepts an unsigned, session-independent OAuth state value. A third party who can obtain a Slack OAuth code for the same Outline Slack client can make a logged-in Outline user complete the callback and link that user's Outline account to the attacker's Slack team_id and user_id. The linked Slack identity can th

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.8 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.1% (top 98%)
CISA exploited list	No
Weakness	CWE-352
Published	2026-05-11
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

2026-05-11 22:22 UTCPublished CVE record published
2026-06-17 10:51 UTCUpdated Record last modified

getoutline outline UPGRADE

Affected: < 1.7.1

Fixed in: 1.7.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.7.1 (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-2026-44695?

outline: upgrade to 1.7.1. Exact commands for each OS are on this page.

Is CVE-2026-44695 being exploited?

CVE-2026-44695 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-2026-44695 affect?

CVE-2026-44695 affects outline. Severity is medium (CVSS 5.8). Outline is a service that allows for collaborative documentation. Prior to 1.7.1, the Slack integration callback for GET /auth/slack.post accepts an unsigned, session-independent OAuth state value. A third party who can obtain a Slack OAuth

How urgent is CVE-2026-44695?

Priority 26/100. Public exploit reference

Software pages

Slack vulnerabilities

Related CVEs

CVE-2026-41649 HIGH 7.7 UPGRADE Outline is a service that allows for collaborative documentation

References

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