Is CVE-2015-8856 in the CISA KEV catalog?

No. CVE-2015-8856 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-8856?

CVE-2015-8856 has a CVSS v3 base score of 6.1 (MEDIUM).

What is the EPSS score for CVE-2015-8856?

CVE-2015-8856 has an EPSS score of 2.48% (83th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2015-8856?

Upgrade node-serve-index on debian 11 to 1.9.1-1 or later.

CVE & CISA-KEV Catalog

CVE-2015-8856

MEDIUMEPSS 83th pctl

6.1

CVSS v3

NVD

Description

Cross-site scripting (XSS) vulnerability in the serve-index package before 1.6.3 for Node.js allows remote attackers to inject arbitrary web script or HTML via a crafted file or directory name.

CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

node-serve-indexDebian

Fixed in:1.9.1-1CVE-2015-8856

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploit Intelligence

2.48%probability of exploitation in 30 days

83rdpercentile

Elevated risk: more likely to be exploited than 83% of all known CVEs.

References

Patch1

nodesecurity.io

Third-Party Advisory1

openwall.com

Other references1

securityfocus.com

Related Vulnerabilities

Other CWE-79 (Cross-Site Scripting (XSS)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-11022	Medium	6.9	99%	-	Fix
CVE-2019-3929	Critical	9.8	99%	KEV	Fix
CVE-2020-9496	Medium	6.1	99%	-	-
CVE-2023-28341	Medium	6.1	99%	-	Fix
CVE-2018-12998	Medium	6.1	98%	-	-
CVE-2025-4123	High	7.6	98%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.