CVE Tools
Sign in

CVE-2026-28406

kaniko has tar archive path traversal in build context extraction allows writing files outside destination directory

Published: Feb 27, 2026Updated: Jul 15, 2026 Sources: CVE List NVD GHSACWE-22
8.2HIGH
NVD MITRE
EPSS Score
0.6%
Top 52.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

kaniko is a tool to build container images from a Dockerfile, inside a container or Kubernetes cluster. Starting in version 1.25.4 and prior to version 1.25.10, kaniko unpacks build context archives using `filepath.Join(dest, cleanedName)` without enforcing that the final path stays within `dest`. A tar entry like `../outside.txt` escapes the extraction root and writes files outside the destination directory. In environments with registry authentication, this can be chained with docker credential helpers to achieve code execution within the executor process. Version 1.25.10 uses securejoin for path resolution in tar extraction.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:HA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:LAvailability
Low
Open in CVSS calculator →

Weaknesses

CWE-22

Affected Products

chainguard
oss-project
kanikoMixed
DevTools & CI / build-test-tools
Go
package-ecosystem
github.com/chainguard-dev/kaniko
OSS Libraries
chainguard-forks
oss-projectaka kaniko
kanikoOn-prem
Cloud & SaaS / container-orchestration

Exploitability

Official Patch Available
Is your org exposed to CVE-2026-28406?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Collection
Discovery
View detailed technique mapping

References

https://github.com/chainguard-forks/kaniko/commit/a370e4b1f66e6e842b685c8f70ed507964c4b221
github.com
https://github.com/chainguard-forks/kaniko/pull/326
github.com
https://github.com/chainguard-forks/kaniko/security/advisories/GHSA-6rxq-q92g-4rmf
github.com
and 6 more references View all →

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-28406 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows