CVE-2020-13794
Authenticated users can exploit an enumeration vulnerability in Harbor
Harbor 1.9.* 1.10.* and 2.0.* allows Exposure of Sensitive Information to an Unauthorized Actor.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Harbor 1.9.* 1.10.* and 2.0.* allows Exposure of Sensitive Information to an Unauthorized Actor.
- Record
CVE-2020-13794- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - CVSS 2.0
- 4.0 Medium
AV:N/AC:L/Au:S/C:P/I:N/A:N - Weakness
- CWE-862
- Updated
- 2026-11-02
CVE List No score
Harbor 1.9.* 1.10.* and 2.0.* allows Exposure of Sensitive Information to an Unauthorized Actor.
- Record
CVE-2020-13794- Updated
- 2026-11-02
EUVDEUVD-2021-1165 No score
Harbor 1.9.* 1.10.* and 2.0.* allows Exposure of Sensitive Information to an Unauthorized Actor.
- Record
EUVD-2021-1165- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-q9p8-33wc-h432
Authenticated users can exploit an enumeration vulnerability in Harbor
Impact
Hidde Smit from Cyber Eagle has discovered an User Enumeration flaw in Harbor. The issue is present in the "/users" api endpoint. This endpoint is supposed to be restricted to administrators. This restriction is able to be bypassed and information can be obtained via the "search" functionality.
Non-administrator users (such as those created via self-registration) can list all usernames and user IDs by sending a GET request to /api/users/search with parameter "username" and value "_", as follows:
curl -X GET "https://<host>/api/users/search?username=_" -H "accept: application/json" --user <user>:<password>
The vulnerability was immediately fixed by the Harbor team and all supported versions were patched. With the patched versions of Harbor, the username is required for search and we have removed the support for querying by email.
Patches
If your product uses the affected releases of Harbor, update to either version 2.1.0 or 2.0.3 to fix this issue immediately
https://github.com/goharbor/harbor/releases/tag/v2.1.0 https://github.com/goharbor/harbor/releases/tag/v2.0.3
Workarounds
There is no workaround for this issue
For more information
If you have any questions or comments about this advisory, contact [email protected] View our security policy at https://github.com/goharbor/harbor/security/policy https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13794
- Record
GHSA-q9p8-33wc-h432- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-862
- Updated
- 2026-11-02
OSV
Harbor 1.9.* 1.10.* and 2.0.* allows Exposure of Sensitive Information to an Unauthorized Actor.
- Record
CVE-2020-13794- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
OSVGHSA-q9p8-33wc-h432
Authenticated users can exploit an enumeration vulnerability in Harbor
Impact
Hidde Smit from Cyber Eagle has discovered an User Enumeration flaw in Harbor. The issue is present in the "/users" api endpoint. This endpoint is supposed to be restricted to administrators. This restriction is able to be bypassed and information can be obtained via the "search" functionality.
Non-administrator users (such as those created via self-registration) can list all usernames and user IDs by sending a GET request to /api/users/search with parameter "username" and value "_", as follows:
curl -X GET "https://<host>/api/users/search?username=_" -H "accept: application/json" --user <user>:<password>
The vulnerability was immediately fixed by the Harbor team and all supported versions were patched. With the patched versions of Harbor, the username is required for search and we have removed the support for querying by email.
Patches
If your product uses the affected releases of Harbor, update to either version 2.1.0 or 2.0.3 to fix this issue immediately
https://github.com/goharbor/harbor/releases/tag/v2.1.0 https://github.com/goharbor/harbor/releases/tag/v2.0.3
Workarounds
There is no workaround for this issue
For more information
If you have any questions or comments about this advisory, contact [email protected] View our security policy at https://github.com/goharbor/harbor/security/policy https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13794
- Record
GHSA-q9p8-33wc-h432- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-862
- Updated
- 2026-11-02
OSVBIT-harbor-2020-13794 No score
Harbor 1.9.* 1.10.* and 2.0.* allows Exposure of Sensitive Information to an Unauthorized Actor.
- Record
BIT-harbor-2020-13794- Updated
- 2026-11-02
OSVGO-2022-0865 No score
Authenticated users can exploit an enumeration vulnerability in Harbor in github.com/goharbor/harbor
Authenticated users can exploit an enumeration vulnerability in Harbor in github.com/goharbor/harbor
- Record
GO-2022-0865- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/goharbor/harborGo |
before 2.0.3 | 2.0.3 |
harborBitnami |
1.9.0 up to 2.0.3 | 2.0.3 |
github.com/goharbor/harborGo |
before 2.0.3+incompatible | 2.0.3+incompatible |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-13794 is a medium vulnerability (CVSS 4.3) in Linuxfoundation Harbor, published September 29, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.27%, the 69th percentile. Fixed in github.com/goharbor/harbor 2.0.3.
References
github.com/goharbor/harbor/releases
cybereagle.io/blog/cve-2020-13794
nvd.nist.gov/vuln/detail/CVE-2020-13794