CVE-2018-1000850
Directory Traversal vulnerability in Square Retrofit
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
7.5
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.
- Record
CVE-2018-1000850- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - CVSS 2.0
- 6.4 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:P - Weakness
- CWE-22
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2018-1000850- Updated
- 2026-11-02
EUVDEUVD-2018-0804 No score
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.
- Record
EUVD-2018-0804- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8p8g-f9vg-r7xr
7.5
Directory Traversal vulnerability in Square Retrofit
Square Retrofit versions from (including) 2.0 to 2.5.0 (excluding) contain a Directory Traversal vulnerability in RequestBuilder class, method addPathParameter. By manipulating the URL an attacker could add or delete resources otherwise unavailable to her. This attack appears to be exploitable via an encoded path parameter on POST, PUT or DELETE request. This vulnerability appears to have been fixed in 2.5.0 and later.
- Record
GHSA-8p8g-f9vg-r7xr- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-22
- Updated
- 2026-11-02
OSV
7.5
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.
- Record
CVE-2018-1000850- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVGHSA-8p8g-f9vg-r7xr
7.5
Directory Traversal vulnerability in Square Retrofit
Square Retrofit versions from (including) 2.0 to 2.5.0 (excluding) contain a Directory Traversal vulnerability in RequestBuilder class, method addPathParameter. By manipulating the URL an attacker could add or delete resources otherwise unavailable to her. This attack appears to be exploitable via an encoded path parameter on POST, PUT or DELETE request. This vulnerability appears to have been fixed in 2.5.0 and later.
- Record
GHSA-8p8g-f9vg-r7xr- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-22
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
com.squareup.retrofit2:retrofitMaven |
2.0.0 up to 2.5.0 | 2.5.0 |
com.squareup.retrofit2:retrofitMaven |
2.0.0 up to 2.5.0, plus listed versions 2.0.12.0.22.1.02.2.02.3.02.4.0 |
2.5.0 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | shoucheng3/square__retrofit_CVE-2018-1000850_2-4-0 | 2025-08-20 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-1000850 is a high vulnerability (CVSS 7.5) in Squareup Retrofit, published December 20, 2018. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 4.03%, the 90th percentile. Fixed in com.squareup.retrofit2:retrofit 2.5.0.
References
github.com/square/retrofit/blob/master/CHANGELOG.md
github.com/square/retrofit/commit/b9a7f6ad72073ddd40254c0058710e87a073047d
ihacktoprotect.com/post/retrofit-path-traversal
lists.apache.org/thread.html/b0656d359c7d40ec9f39c8cc61bca66802ef9a2a12ee199f5b0c1442%40%3Cdev.drill.apache.org%3E
lists.apache.org/thread.html/519eb0fd45642dcecd9ff74cb3e71c20a4753f7d82e2f07864b5108f%40%3Cdev.drill.apache.org%3E
lists.apache.org/thread.html/f9bc3e55f4e28d1dcd1a69aae6d53e609a758e34d2869b4d798e13cc%40%3Cissues.drill.apache.org%3E
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access.redhat.com/errata/RHSA-2019:3892
nvd.nist.gov/vuln/detail/CVE-2018-1000850
github.com/advisories/GHSA-8p8g-f9vg-r7xr
lists.apache.org/thread.html/519eb0fd45642dcecd9ff74cb3e71c20a4753f7d82e2f07864b5108f@%3Cdev.drill.apache.org%3E
lists.apache.org/thread.html/b0656d359c7d40ec9f39c8cc61bca66802ef9a2a12ee199f5b0c1442@%3Cdev.drill.apache.org%3E
lists.apache.org/thread.html/f9bc3e55f4e28d1dcd1a69aae6d53e609a758e34d2869b4d798e13cc@%3Cissues.drill.apache.org%3E
github.com/square/retrofit