What is the CVSS score of CVE-2026-27585?

CVE-2026-27585 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N. EPSS exploitation probability: 0.1%.

Which versions of TLS are affected by CVE-2026-27585?

Organizations using Caddy should be aware of notable risk from CVE-2026-27585, a input validation vulnerability rated CVSS 6.5. Exploitation could compromise the security of affected deployments.. A patch is available.

Is there a public PoC exploit available for CVE-2026-27585?

Yes, a public proof-of-concept exploit is available for CVE-2026-27585. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-27585?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

TLS CVE-2026-27585

MEDIUM

Improper Input Validation (CWE-20)

2026-02-24 security-advisories@github.com

GHSA-4xrr-hq4w-6vf4

TLS Caddy Suse

6.5

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

6.5 MEDIUM

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

SUSE

MEDIUM

qualitative

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Patch released

Mar 31, 2026 - 21:13 nvd

Patch available

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Feb 25, 2026 - 17:13 vuln.today

Public exploit code

CVE Published

Feb 24, 2026 - 17:29 nvd

MEDIUM 6.5

DescriptionGitHub Advisory

Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, the path sanitization routine in file matcher doesn't sanitize backslashes which can lead to bypassing path related security protections. It affects users with specific Caddy and environment configurations. Version 2.11.1 fixes the issue.

AnalysisAI

Caddy versions prior to 2.11.1 fail to sanitize backslashes in file path matching, allowing attackers to bypass path-based security controls through specially crafted requests. The vulnerability affects systems with specific Caddy configurations and has public exploit code available. Exploitation requires network access with no authentication, resulting in limited information disclosure or modification of restricted resources.

Technical ContextAI

Classified as CWE-20 (Improper Input Validation). Affects Caddy. Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, the path sanitization routine in file matcher doesn't sanitize backslashes which can lead to bypassing path related security protections. It affects users with specific Caddy and environment configurations. Version 2.11.1 fixes the issue.

RemediationAI

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

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Vendor StatusVendor

SUSE

Severity: Medium

Product	Status
openSUSE Leap 15.6	Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP5	Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP6	Fixed
openSUSE Leap 15.5	Fixed

CVE-2026-27585 vulnerability details – vuln.today

Back

TLS CVE-2026-27585

Severity by source

CVSS VectorGitHub Advisory

Lifecycle Timeline

DescriptionGitHub Advisory

AnalysisAI

Technical ContextAI

RemediationAI

More in TLS

Same weakness CWE-20 – Improper Input Validation

Vendor StatusVendor

SUSE

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External POC / Exploit Code