Spark allows remote attackers to read arbitrary files via a .. (dot dot) in the URI

published 2016-11-04 10 y ago modified 2026-06-17 4 mo ago also GHSA-89gc-6cw6-4vch , EUVD-2018-0548

cvss: 7.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 5.1%; EPSS 5.1% chance of exploitation in 30 days, percentile 92%
public exploits: 0; none known

Directory traversal vulnerability in Spark 2.5 allows remote attackers to read arbitrary files via a .. (dot dot) in the URI.

Patch / fix

fixed in 1 links 1

maven com.sparkjava:spark-core 2.5.2

github.com/perwendel/spark/issues/700 advisory

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-9177 updated 2026-08-04 cvss 7.5

Spark: Directory traversal vulnerability in version 2.5

Red Hat JBoss Fuse 6 camel
affected: no fix available
Red Hat JBoss A-MQ 6.3 Red Hat JBoss Fuse 6.3
fixed: vendor fix RHSA-2017:0868

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

5.07% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

seclists.org http://seclists.org/fulldisclosure/2016/Nov/13 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.0	7.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:P/I:N/A:N
GitHub	3.0	7.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
maven	com.sparkjava:spark-core	<2.5.2	2.5.2

Classification

Weakness

CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

github.com /perwendel/spark/issues/700
web, issue-tracking, patch, third-party-advisory
seclists.org /fulldisclosure/2016/Nov/13
web, exploit, mailing-list, third-party-advisory
access.redhat.com /errata/RHSA-2017:0868
vendor-advisory, web
securityfocus.com /bid/94218
vdb-entry, web, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2016-9177
advisory
github.com /advisories/GHSA-89gc-6cw6-4vch
advisory
github.com /perwendel/spark
package

Sources

CVE List CVE-2016-9177
GitHub Advisory GHSA-89gc-6cw6-4vch
NVD CVE-2016-9177

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