MEDIUM
CVE-2015-5638
CWE-22Published: September 20, 2015· Updated: Jun 17, 2026
4.3
CVSS v3.1
Official Description
Directory traversal vulnerability in H2O before 1.4.5 and 1.5.x before 1.5.0-beta2, when the file.dir directive is enabled, allows remote attackers to read arbitrary files via a crafted URL.
Technical Analysis
CVE-2015-5638 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityM
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityP
IntegrityNone
AvailabilityNone
AV:N/AC:M/Au:N/C:P/I:N/A:N
Affected Vendors & Products
dena1 product(s)
h20
Source: NVD CPE · 1 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (6)
→
http://jvn.jp/en/jp/JVN65602714/index.htmlVendor Advisory
→
http://jvndb.jvn.jp/jvndb/JVNDB-2015-000136Vendor Advisory
→
https://h2o.examp1e.net/vulnerabilities.html#CVE-2015-5638Vendor Advisory
→
http://jvn.jp/en/jp/JVN65602714/index.htmlVendor Advisory
→
http://jvndb.jvn.jp/jvndb/JVNDB-2015-000136Vendor Advisory
→
https://h2o.examp1e.net/vulnerabilities.html#CVE-2015-5638Vendor Advisory
Quick Facts
CVE IDCVE-2015-5638
CVSS Score4.3 / 10
SeverityMEDIUM
WeaknessCWE-22
CISA KEVNo
Affected1 vendor(s)
PublishedSep 20, 2015
Related CVEs (CWE-22)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2015-5638 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.