CVE-2021-43745: A Denial of Service vulnerabilty exists in Trilium Notes 0.48.6 in the setupPage function

Routine

MEDIUM 5.5DOWNGRADE

CVE-2021-43745 is a medium-severity flaw (CVSS 5.5) affecting trillum notes. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Denial of Service vulnerabilty exists in Trilium Notes 0.48.6 in the setupPage function

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Published	2022-02-24
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: trillium notes project

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

Am I affected?

Timeline

2022-02-24 22:15 UTCPublished CVE record published
2026-06-17 04:11 UTCUpdated Record last modified

trillium notes project trillum notes DOWNGRADE

Affected: 0.48.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.48.6

1. Check installed version

apt-cache policy trillum-notes || rpm -q trillum-notes || trillum-notes --version

2. No fixed release: DOWNGRADE to a release before 0.48.6 (Debian / Ubuntu)

apt-cache madison trillum-notes sudo apt install trillum-notes=<VERSION_BEFORE_0.48.6> sudo apt-mark hold trillum-notes

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list trillum-notes sudo dnf downgrade trillum-notes-<VERSION_BEFORE_0.48.6> sudo dnf versionlock add trillum-notes

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2021-43745?

trillum notes: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-43745 being exploited?

CVE-2021-43745 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-2021-43745 affect?

CVE-2021-43745 affects trillum notes. Severity is medium (CVSS 5.5). A Denial of Service vulnerabilty exists in Trilium Notes 0.48.6 in the setupPage function

How urgent is CVE-2021-43745?

Priority 29/100. Public exploit reference

References

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