CVE-2026-77438: Trilium is an open-source hierarchical note-taking application

Q: How do I fix CVE-2026-77438?

trilium: upgrade to 0.104.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-77438 being exploited?

CVE-2026-77438 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-2026-77438 affect?

CVE-2026-77438 affects trilium. Severity is high (CVSS 7.5). Trilium is an open-source hierarchical note-taking application. In versions up to and including 0.103.0, the public share-search endpoint does not enforce the per-note shareCredentials and shareHiddenFromTree controls, allowing an unauthent

Q: How urgent is CVE-2026-77438?

Priority 45/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2026-77438 is a high-severity flaw (CVSS 7.5) affecting trilium. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Trilium is an open-source hierarchical note-taking application. In versions up to and including 0.103.0, the public share-search endpoint does not enforce the per-note shareCredentials and shareHiddenFromTree controls, allowing an unauthenticated visitor to read the titles, tree paths, and content of protected shared notes. The endpoint authorizes only the ancestor note supplied in the request and then runs a full-text search across the entire pu

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 64%)
CISA exploited list	No
Weakness	CWE-200, CWE-863
Published	2026-08-27
Last modified	2026-10-14

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

Last updated 2026-10-14 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-27 20:18 UTCPublished CVE record published
2026-10-14 15:36 UTCUpdated Record last modified

triliumnotes trilium UPGRADE

Affected: < 0.104.0

Fixed in: 0.104.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 0.104.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade trilium

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-2026-77438?

trilium: upgrade to 0.104.0. Exact commands for each OS are on this page.

Is CVE-2026-77438 being exploited?

CVE-2026-77438 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-2026-77438 affect?

CVE-2026-77438 affects trilium. Severity is high (CVSS 7.5). Trilium is an open-source hierarchical note-taking application. In versions up to and including 0.103.0, the public share-search endpoint does not enforce the per-note shareCredentials and shareHiddenFromTree controls, allowing an unauthent

How urgent is CVE-2026-77438?

Priority 45/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-47727 HIGH 8.8 UPGRADE Trilium is an open-source hierarchical note-taking application
CVE-2026-48996 MEDIUM 6.1 UPGRADE Trilium is an open-source hierarchical note-taking application
CVE-2026-53578 MEDIUM 6.1 UPGRADE Trilium is an open-source hierarchical note-taking application
CVE-2026-53579 MEDIUM 6.1 UPGRADE Trilium is an open-source hierarchical note-taking application
CVE-2026-53580 HIGH 8.1 UPGRADE Trilium is an open-source hierarchical note-taking application

References

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