Cross-site Scripting (XSS) in serve-lite

published 2023-01-25 3 y ago modified 2026-06-17 4 mo ago also GHSA-j8x7-qcw4-xx85 , EUVD-2023-0493

cvss: 5.4; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 48%
public exploits: 0; none known

All versions of the package serve-lite are vulnerable to Cross-site Scripting (XSS) because when it detects a request to a directory, it renders a file listing of all of its contents with links that include the actual file names without any sanitization or output encoding.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 19 mo ago (2025-04-01)

Exploit prediction

0.60% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

gist.github.com https://gist.github.com/lirantal/52debd25284726fcc2eaed9c7512975c referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
GitHub	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
npm	serve-lite	<=1.1.0	no fix listed

Affected products

n/a serve-lite

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

gist.github.com /lirantal/52debd25284726fcc2eaed9c7512975c
web, exploit, third-party-advisory
security.snyk.io /vuln/SNYK-JS-SERVELITE-3149915
web, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2022-25847
advisory
github.com /beenotung/serve-lite
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary