NVD / CVE Program· CNA GitHub_M

CVE-2025-47952: Traefik allows path traversal using url encoding

Noroxi assessment

Priority: Monitor (action score 11/100)

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: 0.98% (FIRST EPSS); higher than 62.2% of all records.
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
According to CISA the attack is automatable: targets can be found by mass scanning.
Fixed version: github.com/traefik/traefik/v2 (Go) 2.11.25; github.com/traefik/traefik/v3 (Go) 3.4.1; govulncheck-vulndb (openSUSE:Tumbleweed) 0.0.20250529T205903-1.1.

Low priority for now. Upgrade to github.com/traefik/traefik/v2 (Go) 2.11.25; github.com/traefik/traefik/v3 (Go) 3.4.1; govulncheck-vulndb (openSUSE:Tumbleweed) 0.0.20250529T205903-1.1 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 (pronounced traffic) is an HTTP reverse proxy and load balancer. Prior to versions 2.11.25 and 3.4.1, there is a potential vulnerability in Traefik managing the requests using a PathPrefix, Path or PathRegex matcher. When Traefik is configured to route the requests to a backend using a matcher based on the path, if the URL contains a URL encoded string in its path, it’s possible to target a backend, exposed using another router, by-passing the middlewares chain. This issue has been patched in versions 2.11.25 and 3.4.1.

LowCVSS 2.9 · v4.0—No exploit Fix available

Published: May 30, 2025
Updated: Jun 17, 2026
EPSS: 0.9% · 62th percentile
CWE: CWE-22

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 11 / 40 · 2.9 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.9%

CISA SSVC decision

Exploitation: none
Automatable: yes
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · GitHub_M: 2.9; NVD has not scored this yet; the score shown is the CNA’s.

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

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

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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

Affected versions

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

traefik traefikbefore 2.11.25
traefik traefik3.0.0 and later · before 3.4.1

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
- < 3.4.1, < 2.11.25affected

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	up to and including 1.7.34	—
Go	github.com/traefik/traefik/v2	before 2.11.25	2.11.25
Go	github.com/traefik/traefik/v3	before 3.4.1	3.4.1
openSUSE:Tumbleweed	govulncheck-vulndb	before 0.0.20250529T205903-1.1	0.0.20250529T205903-1.1
openSUSE:Tumbleweed	traefik	before 3.4.3-1.1	3.4.3-1.1
openSUSE:Tumbleweed	traefik2	before 2.11.26-1.1	2.11.26-1.1

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-2024-52003Nov 29, 2024 · X-Forwarded-Prefix Header still allows for Open Redirect in traefik
25Monitor
← EarlierCVE-2025-32431Apr 21, 2025 · Traefik has a possible vulnerability with the path matchers
35Monitor
Later →CVE-2025-54386Aug 1, 2025 · Traefik's Client Plugin is Vulnerable to Path Traversal, Arbitrary File Overwrites and Remote Code Execution
29Monitor

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	2.11.25	Package registry (OSV)
Go:github.com/traefik/traefik/v3	3.4.1	Package registry (OSV)
opensuse:govulncheck-vulndb	0.0.20250529T205903-1.1 · openSUSE:Tumbleweed	Package registry (OSV)
opensuse:traefik	3.4.3-1.1 · openSUSE:Tumbleweed	Package registry (OSV)
opensuse:traefik2	2.11.26-1.1 · openSUSE:Tumbleweed	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.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

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

traefik/traefikcommit 08d5dfe

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

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

CVE-2025-3243139 days apartTraefik has a possible vulnerability with the path matchers
35Monitor
CVE-2026-65600418 days apartTraefik before v2.11.52 Authentication Bypass via ReplacePathRegex
31Monitor
CVE-2026-67309428 days apartTraefik v3.7.0 Path Traversal via RewriteTarget Authentication Bypass
31Monitor
CVE-2025-5438663 days apartTraefik's Client Plugin is Vulnerable to Path Traversal, Arbitrary File Overwrites and Remote Code Execution
29Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
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:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/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

Fix✗ → ✓Sep 28, 2026, 10:47 PM UTC

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

References

github.com/traefik/traefik/commit/08d5dfee0164aa54dd44a467870042e18e8d3f00

Show all references (3 more)

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

All records