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Fencer Vulns
high 7.3

CVE-2026-45738 json

Argo CD: Stored XSS in application link annotations enables developer-to-admin privilege escalation

published 2026-05-19 5 mo ago modified 2026-10-24 15 d ago also BIT-argo-cd-2026-45738 , EUVD-2026-44789 , GHSA-h98r-wv3h-fr38 , GO-2026-5418

cvss
7.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 49%
public exploits
0
none known

Summary

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. Prior to 3.2.12, 3.3.10, and 3.4.2, Argo CD users with application write access can set link.argocd.argoproj.io/* annotations whose pipe-separated values are rendered by ui/src/app/applications/components/application-summary/application-summary.tsx in the Summary tab URLs section as anchor href values without URL validation, allowing javascript: execution in a higher-privileged user's authenticated Argo CD origin session. This issue is fixed in versions 3.2.12, 3.3.10, and 3.4.2.

Patch / fix

  • go github.com/argoproj/argo-cd/v3 3.2.12, 3.3.10, 3.4.2
  • bitnami argo-cd 3.2.12, 3.3.10, 3.4.2
  • linuxfoundation argo-cd 3.2.12, 3.3.10, 3.4.2
  • linuxfoundation argo_continuous_delivery 3.2.12, 3.3.10, 3.4.2
  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1

opensuse advisories openSUSE-SU-2026:21483-1

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
3 mo ago

Exploit prediction

0.61% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/argoproj/argo-cd/security/advisories/GHSA-h98r-wv3h-fr38 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
GitHub 3.1 7.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
NVD 3.1 8.7 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
OSV 3.1 8.7 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Affected packages

ecosystem package affected fixed in
go github.com/argoproj/argo-cd/v3
<3.2.12
>=3.3.0-rc1, <3.3.10
>=3.4.0-rc1, <3.4.2
3.2.12
3.3.10
3.4.2
go github.com/argoproj/argo-cd/v2
<=2.14.21
all versions
 no fix listed
go github.com/argoproj/argo-cd
<=1.8.7
all versions
 no fix listed
bitnami argo-cd
<3.2.12
>=3.3.0, <3.3.10
>=3.4.0, <3.4.2
3.2.12
3.3.10
3.4.2

Affected products

  • argoproj argo-cd

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.