CVE-2023-35844: packages/backend/src/routers in Lightdash before 0.510.3 has insecure file endpoints, e.g., they allow .

Q: How do I fix CVE-2023-35844?

lightdash: upgrade to 0.510.3. Exact commands for each OS are on this page.

Q: Is CVE-2023-35844 being exploited?

CVE-2023-35844 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-2023-35844 affect?

CVE-2023-35844 affects lightdash. Severity is high (CVSS 7.5). packages/backend/src/routers in Lightdash before 0.510.3 has insecure file endpoints, e.g., they allow .. directory traversal and do not ensure that an intended file extension (.csv or .png) is used.

Q: How urgent is CVE-2023-35844?

Priority 60/100. High severity; EPSS top 6%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2023-35844 is a high-severity flaw (CVSS 7.5) affecting lightdash. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

packages/backend/src/routers in Lightdash before 0.510.3 has insecure file endpoints, e.g., they allow .. directory traversal and do not ensure that an intended file extension (.csv or .png) is used.

Why this priority

High severity
EPSS top 6%: very likely to be exploited
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	6.3% (top 6%)
CISA exploited list	No
Weakness	CWE-22
Published	2023-06-19
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: lightdash

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

Am I affected?

Timeline

2023-06-19 02:15 UTCPublished CVE record published
2026-06-17 06:05 UTCUpdated Record last modified

lightdash lightdash UPGRADE

Affected: < 0.510.3

Fixed in: 0.510.3

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 0.510.3 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade lightdash

Note

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

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Nuclei scan template: Lightdash version <= 0.510.3 Arbitrary File Read

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-2023-35844?

lightdash: upgrade to 0.510.3. Exact commands for each OS are on this page.

Is CVE-2023-35844 being exploited?

CVE-2023-35844 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-2023-35844 affect?

CVE-2023-35844 affects lightdash. Severity is high (CVSS 7.5). packages/backend/src/routers in Lightdash before 0.510.3 has insecure file endpoints, e.g., they allow .. directory traversal and do not ensure that an intended file extension (.csv or .png) is used.

How urgent is CVE-2023-35844?

Priority 60/100. High severity; EPSS top 6%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

References

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