CVE-2020-7670
Withdrawn: HTTP Request Smuggling in Agoo
agoo prior to 2.14.0 allows request smuggling attacks where agoo is used as a backend and a frontend proxy also being vulnerable. HTTP pipelining issues and request smuggling attacks might be possible due to incorrect Content-Length and Transfer encoding header parsing. It is possible to conduct HTTP request smuggling attacks where agoo is used as part of a chain of backend servers due to insufficient Content-Length and Transfer Encoding parsing.
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
agoo prior to 2.14.0 allows request smuggling attacks where agoo is used as a backend and a frontend proxy also being vulnerable. HTTP pipelining issues and request smuggling attacks might be possible due to incorrect Content-Length and Transfer encoding header parsing. It is possible to conduct HTTP request smuggling attacks where agoo is used as part of a chain of backend servers due to insufficient Content-Length and Transfer Encoding parsing.
- Record
CVE-2020-7670- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:N - Weakness
- CWE-444
- Updated
- 2026-11-02
CVE List No score
agoo prior to 2.14.0 allows request smuggling attacks where agoo is used as a backend and a frontend proxy also being vulnerable. HTTP pipelining issues and request smuggling attacks might be possible due to incorrect Content-Length and Transfer encoding header parsing. It is possible to conduct HTTP request smuggling attacks where agoo is used as part of a chain of backend servers due to insufficient Content-Length and Transfer Encoding parsing.
- Record
CVE-2020-7670- Updated
- 2026-11-02
EUVDEUVD-2020-1430 No score
agoo prior to 2.14.0 allows request smuggling attacks where agoo is used as a backend and a frontend proxy also being vulnerable. HTTP pipelining issues and request smuggling attacks might be possible due to incorrect Content-Length and Transfer encoding header parsing. It is possible to conduct HTTP request smuggling attacks where agoo is used as part of a chain of backend servers due to insufficient Content-Length and Transfer Encoding parsing.
- Record
EUVD-2020-1430- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-h385-52j6-9984 No score
Withdrawn: HTTP Request Smuggling in Agoo
Withdrawn reason
Withdrawn on 1/13/2021 due to this comment from the maintainer. This is no longer considered a vulnerability.
Original description
agoo through 2.12.3 allows request smuggling attacks where agoo is used as a backend and a frontend proxy also being vulnerable. It is possible to conduct HTTP request smuggling attacks by sending the Content-Length header twice. Furthermore, invalid Transfer Encoding headers were found to be parsed as valid which could be leveraged for TE:CL smuggling attacks.
- Record
GHSA-h385-52j6-9984- Weakness
- CWE-444
- Updated
- 2026-11-02
OSV
agoo prior to 2.14.0 allows request smuggling attacks where agoo is used as a backend and a frontend proxy also being vulnerable. HTTP pipelining issues and request smuggling attacks might be possible due to incorrect Content-Length and Transfer encoding header parsing. It is possible to conduct HTTP request smuggling attacks where agoo is used as part of a chain of backend servers due to insufficient Content-Length and Transfer Encoding parsing.
- Record
CVE-2020-7670- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVGHSA-h385-52j6-9984 No score
Withdrawn: HTTP Request Smuggling in Agoo
Withdrawn reason
Withdrawn on 1/13/2021 due to this comment from the maintainer. This is no longer considered a vulnerability.
Original description
agoo through 2.12.3 allows request smuggling attacks where agoo is used as a backend and a frontend proxy also being vulnerable. It is possible to conduct HTTP request smuggling attacks by sending the Content-Length header twice. Furthermore, invalid Transfer Encoding headers were found to be parsed as valid which could be leveraged for TE:CL smuggling attacks.
- Record
GHSA-h385-52j6-9984- Weakness
- CWE-444
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| affected | ||
| 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-2020-7670 is a high vulnerability (CVSS 7.5) in Ohler Agoo, published June 10, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.17%, the 67th percentile. No source names a fixed version.