CVE-2026-71326Patch(traefik / traefik)

LOWCVSS 3.8 · LOW

Signal is active with 1 mentions in latest observed window

Immediate actions

Patch traefik traefik systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Traefik is an open source HTTP reverse proxy and load balancer. From 3.6.11 until 3.6.25 and 3.7.10, Traefik's BasicAuth middleware in pkg/middlewares/auth/basic_auth.go deduplicates concurrent password checks with a singleflight key built from the delimiter-free concatenation of password and secret, allowing an attacker who has a valid credential and the stored hash to authenticate as an unconfigured username when headerField trusts the forwarded identity. This issue is fixed in 3.6.25 and 3.7.10.

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0.5/ 10 priority

Sources & remediation

Patch / fix

Weakness type (CWE)

CWE-287

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

traefik

Threat summary

Patch or workaround signal is available
1 mentions across 1 observed day

What's happening

Patch or workaround mentioned in 1 signal
Technical details provided in 1 signal
1 total mentions across 1 day

Affected systems

Vendors

traefik

Products

traefik

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Patch

1100.0%

Full discourse1 post

CyberSignal | Cybersecurity News@XQOPTRX46d
Patch
🔐 Traefik BasicAuth vulnerability disclosed CVE-2026-71326 affects certain Traefik 3.6.x and 3.7.x releases. A flaw in concurrent password-check deduplication can, under specific configurations, allow a user with valid credentials and knowledge of the stored hash to authenticate under an unintended username. ✅ Fixed in 3.6.25 and 3.7.10. 🔎 Source: Traefik / Tenable. #Traefik #CloudSecurity #Authentication #CVE #CyberSecurity
Post summary
The alert reports the discovery of CVE-2026-71326 and confirms the availability of patches (3.6.25 and 3.7.10) to address an authentication bypass flaw in Traefik's BasicAuth handling.
0000039
34 followersView on X

CPE platform detail1 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

1 of 1 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	traefik	traefik	-	-	-

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