CVE-2019-5457: Cross-site scripting (XSS) vulnerability in min-http-server (all versions) allows an attacker with access to t

Q: How do I fix CVE-2019-5457?

min-http-server: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2019-5457 being exploited?

CVE-2019-5457 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-2019-5457 affect?

CVE-2019-5457 affects min-http-server. Severity is medium (CVSS 5.4). Cross-site scripting (XSS) vulnerability in min-http-server (all versions) allows an attacker with access to the server file system to execute arbitrary JavaScript code in victim's browser.

Q: How urgent is CVE-2019-5457?

Priority 37/100. Public exploit reference

Routine

MEDIUM 5.4DOWNGRADE

CVE-2019-5457 is a medium-severity flaw (CVSS 5.4) affecting min-http-server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in min-http-server (all versions) allows an attacker with access to the server file system to execute arbitrary JavaScript code in victim's browser.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-79
Published	2019-07-30
Last modified	2026-06-17

Publisher (CNA): HackerOne · Vendor: min-http-server project

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

Am I affected?

Timeline

2019-07-30 21:15 UTCPublished CVE record published
2026-06-17 02:37 UTCUpdated Record last modified

min-http-server project min-http-server DOWNGRADE

Affected: 1.0.0 · 1.0.2 · 1.0.4 · 1.0.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.0

1. Check installed version

npm ls min-http-server

2. No fixed release: DOWNGRADE to a release before 1.0.0

npm view min-http-server versions npm install min-http-server@"<1.0.0"

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-2019-5457?

min-http-server: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-5457 being exploited?

CVE-2019-5457 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-2019-5457 affect?

CVE-2019-5457 affects min-http-server. Severity is medium (CVSS 5.4). Cross-site scripting (XSS) vulnerability in min-http-server (all versions) allows an attacker with access to the server file system to execute arbitrary JavaScript code in victim's browser.

How urgent is CVE-2019-5457?

Priority 37/100. Public exploit reference

References

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