HOMEVULNERABILITIESCVE-2021-44659
CRITICAL

CVE-2021-44659

CWE-918Published: December 22, 2021· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

Adding a new pipeline in GoCD server version 21.3.0 has a functionality that could be abused to do an un-intended action in order to achieve a Server Side Request Forgery (SSRF). NOTE: the vendor's position is that the observed behavior is not a vulnerability, because the product's design allows an admin to configure outbound requests

NVD Source

Technical Analysis

CVE-2021-44659 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 complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

thoughtworks1 product(s)
gocd
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

ADVISORYhttps://github.com/Mesh3l911/CVE-2021-44659
ADVISORYhttps://github.com/gocd/gocd
ADVISORYhttps://www.gocd.org/
ADVISORYhttps://youtu.be/WW_a3znugl0
ADVISORYhttps://github.com/Mesh3l911/CVE-2021-44659
ADVISORYhttps://github.com/gocd/gocd
ADVISORYhttps://www.gocd.org/
ADVISORYhttps://youtu.be/WW_a3znugl0

All References (8)

→
https://github.com/Mesh3l911/CVE-2021-44659Broken Link · Exploit · Third Party Advisory
→
https://github.com/gocd/gocdProduct · Third Party Advisory
→
https://www.gocd.org/Product · Vendor Advisory
→
https://youtu.be/WW_a3znugl0Exploit · Third Party Advisory
→
https://github.com/Mesh3l911/CVE-2021-44659Broken Link · Exploit · Third Party Advisory
→
https://github.com/gocd/gocdProduct · Third Party Advisory
→
https://www.gocd.org/Product · Vendor Advisory
→
https://youtu.be/WW_a3znugl0Exploit · Third Party Advisory

Quick Facts

CVE IDCVE-2021-44659
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-918
CISA KEVNo
Affected1 vendor(s)
PublishedDec 22, 2021

Related CVEs (CWE-918)

CVE-2016-10927
10.0
CVE-2017-12905
10.0
CVE-2025-2828
10.0
CVE-2026-35431
10.0
CVE-2026-47938
10.0
CVE-2018-14721
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-44659 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. CVE data is provided under the NVD usage policy.
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