CVE-2019-15603: The seefl package v0.1.1 is vulnerable to a stored Cross-Site Scripting (XSS) vulnerability via a malicious fi

Q: How do I fix CVE-2019-15603?

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

Q: Is CVE-2019-15603 being exploited?

CVE-2019-15603 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-2019-15603 affect?

CVE-2019-15603 affects seeftl. Severity is medium (CVSS 6.1). The seefl package v0.1.1 is vulnerable to a stored Cross-Site Scripting (XSS) vulnerability via a malicious filename rendered in a directory listing.

Q: How urgent is CVE-2019-15603?

Priority 40/100. Public exploit reference

This month

MEDIUM 6.1DOWNGRADE

CVE-2019-15603 is a medium-severity flaw (CVSS 6.1) affecting seeftl. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The seefl package v0.1.1 is vulnerable to a stored Cross-Site Scripting (XSS) vulnerability via a malicious filename rendered in a directory listing.

Why this priority

Public exploit reference

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	0.8% (top 45%)
CISA exploited list	No
Weakness	CWE-79
Published	2020-01-06
Last modified	2026-06-17

Publisher (CNA): HackerOne · Vendor: seeftl project

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

Am I affected?

Timeline

2020-01-06 17:15 UTCPublished CVE record published
2026-06-17 02:20 UTCUpdated Record last modified

seeftl project seeftl DOWNGRADE

Affected: 0.1.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.1.1

1. Check installed version

npm ls seeftl

2. No fixed release: DOWNGRADE to a release before 0.1.1

npm view seeftl versions npm install seeftl@"<0.1.1"

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-2019-15603?

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

Is CVE-2019-15603 being exploited?

CVE-2019-15603 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-2019-15603 affect?

CVE-2019-15603 affects seeftl. Severity is medium (CVSS 6.1). The seefl package v0.1.1 is vulnerable to a stored Cross-Site Scripting (XSS) vulnerability via a malicious filename rendered in a directory listing.

How urgent is CVE-2019-15603?

Priority 40/100. Public exploit reference

References

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