CVE-2019-5422: XSS in buttle npm package version 0.2.0 causes execution of attacker-provided code in the victim's browser whe

Q: How do I fix CVE-2019-5422?

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

Q: Is CVE-2019-5422 being exploited?

CVE-2019-5422 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-2019-5422 affect?

CVE-2019-5422 affects buttle. Severity is medium (CVSS 6.1). XSS in buttle npm package version 0.2.0 causes execution of attacker-provided code in the victim's browser when an attacker creates an arbitrary file on the server.

Q: How urgent is CVE-2019-5422?

Priority 38/100. No elevated risk signals yet.

Routine

MEDIUM 6.1DOWNGRADE

CVE-2019-5422 is a medium-severity flaw (CVSS 6.1) affecting buttle. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

XSS in buttle npm package version 0.2.0 causes execution of attacker-provided code in the victim's browser when an attacker creates an arbitrary file on the server.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.2% (top 33%)
CISA exploited list	No
Weakness	CWE-79
Published	2019-04-03
Last modified	2026-06-17

Publisher (CNA): HackerOne · Vendor: buttle project

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

Am I affected?

Timeline

2019-04-03 15:29 UTCPublished CVE record published
2026-06-17 02:37 UTCUpdated Record last modified

buttle project buttle DOWNGRADE

Affected: 0.2.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.2.0

1. Check installed version

npm ls buttle

2. No fixed release: DOWNGRADE to a release before 0.2.0

npm view buttle versions npm install buttle@"<0.2.0"

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-2019-5422?

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

Is CVE-2019-5422 being exploited?

CVE-2019-5422 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-2019-5422 affect?

CVE-2019-5422 affects buttle. Severity is medium (CVSS 6.1). XSS in buttle npm package version 0.2.0 causes execution of attacker-provided code in the victim's browser when an attacker creates an arbitrary file on the server.

How urgent is CVE-2019-5422?

Priority 38/100. No elevated risk signals yet.

Software pages

npm packages vulnerabilities

Related CVEs

CVE-2018-3766 HIGH 7.5 UPGRADE Path traversal in buttle module versions <= 0.2.0 allows to read any file in the server.

References

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