NVD / CVE Program· CNA GitHub_M

CVE-2025-54386: Traefik's Client Plugin is Vulnerable to Path Traversal, Arbitrary File Overwrites and Remote Code Execution

HighCVSS 7.3 · v4.0—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 29/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 1.3% (FIRST EPSS); higher than 72.1% of all records.
Anyone who can reach it over the internet can trigger it. Administrator privileges are required. Special conditions such as timing or configuration are required.
Fixed version: github.com/traefik/traefik/v2 (Go) 2.11.28; github.com/traefik/traefik/v3 (Go) 3.5.0, 3.4.5; govulncheck-vulndb (openSUSE:Leap 15.6) 0.0.20250814T182633-150000.1.98.1.

Low priority for now. Upgrade to github.com/traefik/traefik/v2 (Go) 2.11.28; github.com/traefik/traefik/v3 (Go) 3.5.0, 3.4.5; govulncheck-vulndb (openSUSE:Leap 15.6) 0.0.20250814T182633-150000.1.98.1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Traefik is an HTTP reverse proxy and load balancer. In versions 2.11.27 and below, 3.0.0 through 3.4.4 and 3.5.0-rc1, a path traversal vulnerability was discovered in WASM Traefik’s plugin installation mechanism. By supplying a maliciously crafted ZIP archive containing file paths with ../ sequences, an attacker can overwrite arbitrary files on the system outside of the intended plugin directory. This can lead to remote code execution (RCE), privilege escalation, persistence, or denial of service. This is fixed in versions 2.11.28, 3.4.5 and 3.5.0.

Published: Aug 1, 2025
Updated: Jun 17, 2026
EPSS: 1.3% · 72th percentile
CWE: CWE-22

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 29 / 40 · 7.3 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 1.3%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · GitHub_M: 7.3; NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
traefik	traefik	cpe:2.3:a:traefik:traefik

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

traefik traefik
- <= 2.11.27, < 2.11.28, <= 3.0.0, < 3.4.5, >= 3.5.0-rc1, < 3.5.0-rc2affected

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

traefik traefikbefore 2.11.7
traefik traefik3.0.0 and later · before 3.4.4
traefik traefik3.5.0

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Go	github.com/traefik/traefik	from 0	—
Go	github.com/traefik/traefik/v2	before 2.11.28	2.11.28
Go	github.com/traefik/traefik/v3	from 3.5.0-rc1 · before 3.5.0	3.5.0
Go	github.com/traefik/traefik/v3	before 3.4.5	3.4.5
openSUSE:Leap 15.6	govulncheck-vulndb	before 0.0.20250814T182633-150000.1.98.1	0.0.20250814T182633-150000.1.98.1
openSUSE:Tumbleweed	govulncheck-vulndb	before 0.0.20250811T192933-1.1	0.0.20250811T192933-1.1
openSUSE:Tumbleweed	traefik2	before 2.11.35-1.1	2.11.35-1.1
SUSE:Linux Enterprise Module for Package Hub 15 SP6	govulncheck-vulndb	before 0.0.20250814T182633-150000.1.98.1	0.0.20250814T182633-150000.1.98.1

Same product

traefik: all records

Other highest-scoring records for the same primary product.

CVE-2026-85595Traefik before v2.11.55 and v3.0.0 through v3.7.10 Authentication Bypass via digestAuth
38Monitor
CVE-2026-88877Traefik v3.7.0 Authentication Bypass via from-to-www-redirect
37Monitor
CVE-2026-88007Traefik HTTP/3 Backend NTLM Connection Reuse
36Monitor

Published before and after this one in the same product

← EarlierCVE-2025-32431Apr 21, 2025 · Traefik has a possible vulnerability with the path matchers
35Monitor
← EarlierCVE-2025-47952May 30, 2025 · Traefik allows path traversal using url encoding
11Monitor
Later →CVE-2025-66490Dec 9, 2025 · Traefik doesn't Prevent Path Normalization Bypass in Router + Middleware Rules
27Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
Go:github.com/traefik/traefik/v2	2.11.28	Package registry (OSV)
Go:github.com/traefik/traefik/v3	3.4.5	Package registry (OSV)
Go:github.com/traefik/traefik/v3	3.5.0	Package registry (OSV)
opensuse:govulncheck-vulndb	0.0.20250814T182633-150000.1.98.1 · openSUSE:Leap 15.6	Package registry (OSV)
opensuse:traefik2	2.11.35-1.1 · openSUSE:Tumbleweed	Package registry (OSV)
suse:govulncheck-vulndb	0.0.20250814T182633-150000.1.98.1 · SUSE:Linux Enterprise Module for Package Hub 15 SP6	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2025-32431102 days apartTraefik has a possible vulnerability with the path matchers
35Monitor
CVE-2026-65600355 days apartTraefik before v2.11.52 Authentication Bypass via ReplacePathRegex
31Monitor
CVE-2026-67309365 days apartTraefik v3.7.0 Path Traversal via RewriteTarget Authentication Bypass
31Monitor
CVE-2025-4795263 days apartTraefik allows path traversal using url encoding
11Monitor

Not on record for this CVE: EPSS history · researcher credit · public bounty program.

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
Administrator privileges are required.
Special conditions such as timing or configuration are required.

If successful

Confidentiality
Integrity
Availability

Attack vector: Network
Attack complexity: High
Privileges required: High
User interaction: P
Scope: X

Weakness class (CWE)

CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Root cause

A user-supplied file name is joined with the allowed directory, but the result is never checked to confirm it is still inside that directory.

The bug in code

The whole CWE-22 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1const file = path.join(ROOT, req.query.name);
2res.sendFile(file);

Fixed

1const file = path.resolve(ROOT, req.query.name);
2if (!file.startsWith(ROOT + path.sep)) {
3  return res.sendStatus(400);
4}
5res.sendFile(file);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log (1)

Fix✗ → ✓Sep 28, 2026, 10:47 PM UTC

For records you follow, these changes also arrive as notifications. →

References

github.com/traefik/plugin-service/pull/71

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

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