HOMEVULNERABILITIESCVE-2018-1000850
HIGH

CVE-2018-1000850

CWE-22Published: December 20, 2018· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

Square Retrofit version versions from (including) 2.0 and 2.5.0 (excluding) contains a Directory Traversal vulnerability in RequestBuilder class, method addPathParameter that can result in By manipulating the URL an attacker could add or delete resources otherwise unavailable to her.. This attack appear to be exploitable via An attacker should have access to an encoded path parameter on POST, PUT or DELETE request.. This vulnerability appears to have been fixed in 2.5.0 and later.

NVD Source

Technical Analysis

CVE-2018-1000850 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected Vendors & Products

squareup1 product(s)
retrofit
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

PATCHhttps://github.com/square/retrofit/commit/b9a7f6ad72073ddd40254c0058710e87a073047d#diff-943ec7ed35e68201824904d1dc0ec982
PATCHhttps://github.com/square/retrofit/commit/b9a7f6ad72073ddd40254c0058710e87a073047d#diff-943ec7ed35e68201824904d1dc0ec982
ADVISORYhttps://github.com/square/retrofit/blob/master/CHANGELOG.md
ADVISORYhttps://ihacktoprotect.com/post/retrofit-path-traversal/
ADVISORYhttps://github.com/square/retrofit/blob/master/CHANGELOG.md
ADVISORYhttps://ihacktoprotect.com/post/retrofit-path-traversal/

All References (14)

→
https://access.redhat.com/errata/RHSA-2019:3892
→
https://github.com/square/retrofit/blob/master/CHANGELOG.mdRelease Notes · Third Party Advisory
→
https://github.com/square/retrofit/commit/b9a7f6ad72073ddd40254c0058710e87a073047d#diff-943ec7ed35e68201824904d1dc0ec982Patch · Third Party Advisory
→
https://ihacktoprotect.com/post/retrofit-path-traversal/Exploit · Third Party Advisory
→
https://lists.apache.org/thread.html/519eb0fd45642dcecd9ff74cb3e71c20a4753f7d82e2f07864b5108f%40%3Cdev.drill.apache.org%3E
→
https://lists.apache.org/thread.html/b0656d359c7d40ec9f39c8cc61bca66802ef9a2a12ee199f5b0c1442%40%3Cdev.drill.apache.org%3E
→
https://lists.apache.org/thread.html/f9bc3e55f4e28d1dcd1a69aae6d53e609a758e34d2869b4d798e13cc%40%3Cissues.drill.apache.org%3E
→
https://access.redhat.com/errata/RHSA-2019:3892
→
https://github.com/square/retrofit/blob/master/CHANGELOG.mdRelease Notes · Third Party Advisory
→
https://github.com/square/retrofit/commit/b9a7f6ad72073ddd40254c0058710e87a073047d#diff-943ec7ed35e68201824904d1dc0ec982Patch · Third Party Advisory
→
https://ihacktoprotect.com/post/retrofit-path-traversal/Exploit · Third Party Advisory
→
https://lists.apache.org/thread.html/519eb0fd45642dcecd9ff74cb3e71c20a4753f7d82e2f07864b5108f%40%3Cdev.drill.apache.org%3E
→
https://lists.apache.org/thread.html/b0656d359c7d40ec9f39c8cc61bca66802ef9a2a12ee199f5b0c1442%40%3Cdev.drill.apache.org%3E
→
https://lists.apache.org/thread.html/f9bc3e55f4e28d1dcd1a69aae6d53e609a758e34d2869b4d798e13cc%40%3Cissues.drill.apache.org%3E

Quick Facts

CVE IDCVE-2018-1000850
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-22
CISA KEVNo
Affected1 vendor(s)
PublishedDec 20, 2018

Related CVEs (CWE-22)

CVE-2023-2909
10.0
CVE-2015-0779
10.0
CVE-2020-29495
10.0
CVE-2026-34909
KEV10.0
CVE-2011-2653
10.0
CVE-2010-5324
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-1000850 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.
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