Secuno
ENNL
Book demo

CVE-2026-85595

9.8 CRITICALPublic exploitEPSS 0.41%
  1. Published4 Sept 2026

Description

Traefik versions before v2.11.55 and versions v3.0.0 through v3.7.10 contain an authentication bypass vulnerability in the digestAuth middleware where unknown usernames receive an empty secret instead of rejection. Attackers can compute a valid digest response using the empty secret and arbitrary credentials to bypass authentication on any digestAuth-protected route without a valid username or password.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Traefik Traefik≥ 3.0.0 < 3.7.11 · < 2.11.55

Remediation

Fixed in
Traefik Traefik≥ 3.7.11

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2025-439368.1
Dell ObjectScale, versions prior to ObjectScale 4.4.0.0, contains an Improper…
CVE-2026-872179.1
Vulnerability in the Oracle Hyperion Financial Management product of Oracle Hyperion…
CVE-2026-871889.8
Vulnerability in the Oracle Hyperion Financial Management product of Oracle Hyperion…
CVE-2026-871849.8
Vulnerability in the Oracle Hyperion Financial Management product of Oracle Hyperion…
CVE-2026-871769.1
Vulnerability in the Oracle Hyperion Financial Management product of Oracle Hyperion…
CVE-2026-871759.1
Vulnerability in the Oracle Hyperion Financial Management product of Oracle Hyperion…

Frequently asked

Is CVE-2026-85595 being actively exploited?

CVE-2026-85595 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.41%.

How severe is CVE-2026-85595?

CVE-2026-85595 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.41% probability of exploitation.

Which products are affected by CVE-2026-85595?

Affected products include Traefik Traefik.

How do I fix CVE-2026-85595?

Upgrade affected software to a fixed version, for example Traefik Traefik 3.7.11 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-85595 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.