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CVE-2018-3809

Information Exposure on Case Insensitive File Systems in serve

5.3 MediumFix available

Information exposure through directory listings in serve 6.5.3 allows directory listing and file access even when they have been set to be ignored.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
None
Availability
None

Exploit likelihood

1.03%Up 0.6 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 5.3

Information exposure through directory listings in serve 6.5.3 allows directory listing and file access even when they have been set to be ignored.

Record
CVE-2018-3809
CVSS 3.0
5.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:P/I:N/A:N
Weakness
CWE-200
Updated
2026-11-02
CVE List No score

Information exposure through directory listings in serve 6.5.3 allows directory listing and file access even when they have been set to be ignored.

Record
CVE-2018-3809
Updated
2026-11-02
EUVDEUVD-2018-0232 No score

Information exposure through directory listings in serve 6.5.3 allows directory listing and file access even when they have been set to be ignored.

Record
EUVD-2018-0232
Updated
2026-11-03
GitHub AdvisoriesGHSA-686g-3xr3-x4x6 5.3

Information Exposure on Case Insensitive File Systems in serve

Versions of serve before 7.0.0 are vulnerable to information exposure, bypassing the ignore security control, but only on case insensitive file systems.

Recommendation

Update to version 7.0.0 or later.

Record
GHSA-686g-3xr3-x4x6
CVSS 3.0
5.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-200
Updated
2026-11-02
OSV 5.3

Information exposure through directory listings in serve 6.5.3 allows directory listing and file access even when they have been set to be ignored.

Record
CVE-2018-3809
CVSS 3.0
5.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-02
OSVGHSA-686g-3xr3-x4x6 5.3

Information Exposure on Case Insensitive File Systems in serve

Versions of serve before 7.0.0 are vulnerable to information exposure, bypassing the ignore security control, but only on case insensitive file systems.

Recommendation

Update to version 7.0.0 or later.

Record
GHSA-686g-3xr3-x4x6
CVSS 3.0
5.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-200
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
serve
npm
before 7.0.0
7.0.0

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-3809 is a medium vulnerability (CVSS 5.3) in Zeit Serve, published June 1, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.03%, the 63rd percentile. Fixed in serve 7.0.0.

References

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