CVE-2026-121621

HIGH
MEDIUM Priority: 0.16 BB Relevance: 68/100
Published: 2026-11-03 Modified: 2026-11-06 First seen: 2026-11-03 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: Unchanged
C: High
I: High
A: High

Description

A command injection vulnerability was found in Argo CD Image Updater, where a proxy URL configured on an SSH Git repository is passed unsanitized into a shell-interpreted SSH command. An attacker able to set a malicious proxy value can inject shell metacharacters to execute arbitrary commands and access credentials in the context of the Image Updater process.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
— — 0 < 1.4.1

Bug Bounty Relevance

68 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

8.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

1.82%
Raw Score 0.018210
Percentile 79.1%
Date 2026-11-14

EPSS Trend

2026-11-14
0.01821
2026-11-13
0.01821
2026-11-12
0.01821
2026-11-10
0.01821
2026-11-09
0.01821
2026-11-08
0.01821
2026-11-07
0.01821
2026-11-06
0.01821
2026-11-05
0.01762
2026-11-04
0.01762

Intelligence Sources

mitre ref →
nvd ref →