High severity · published Oct 1, 2025
CVE-2025-59531
Unauthenticated argocd-server panic via a malicious Bitbucket-Server webhook payload
7.5
CVSS
0.6%
EPSS
No
On KEV
Description
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. Versions 1.2.0 through 1.8.7, 2.0.0-rc1 through 2.14.19, 3.0.0-rc1 through 3.2.0-rc1, 3.1.7 and 3.0.18 are vulnerable to malicious API requests which can crash the API server and cause denial of service to legitimate clients. Without a configured webhook.bitbucketserver.secret, Argo CD's /api/webhook endpoint crashes when receiving a malformed Bitbucket Server payload (non-array repository.links.clone field). A single unauthenticated request triggers CrashLoopBackOff, and targeting all replicas causes complete API outage. This issue is fixed in versions 2.14.20, 3.2.0-rc2, 3.1.8 and 3.0.19.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AR
argo-cd · argoproj
>= 1.2.0, <= 1.8.7; >= 2.0.0-rc1, < 2.14.20; >= 3.2.0-rc1, < 3.2.0-rc2; >= 3.1.0-rc1, < 3.1.8; >= 3.0.0-rc1, < 3.0.19 · source: vendor
AC
Argo CD · Argoproj
1.2.0 through 1.8.7; 2.0.0 before 2.14.20; 3.0.0 before 3.0.19; 3.1.0 before 3.1.8; 3.2.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-59531
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-59531
Patch
https://github.com/argoproj/argo-cd/commit/5c466a4e39802e059e75c0008ae7b7b8e842538f
Exploit
https://github.com/argoproj/argo-cd/security/advisories/GHSA-f9gq-prrc-hrhc
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