CVE-2026-45692

MEDIUM

5.4

CVSS v3

Description

Caddy is an extensible server platform that uses TLS by default. From 2.4.0 until 2.11.3, the authorization layer and the /config traversal layer do not agree on what object the path refers to. In this case, a path authorized for one config object is accepted, but then resolves to a different config object during traversal. This happens because the authorization layer uses string prefix matching and the /config traversal layer parses array indices numerically using strconv.Atoi(). This vulnerability is fixed in 2.11.3.

CWE-187 CWE-863Incorrect Authorization

How to fix

Remediation Available

caddyDebian

Fixed in:2.11.4-1CVE-2026-45692

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.17%probability of exploitation in 30 days

6thpercentile

Low risk: more likely to be exploited than 6% of all known CVEs.

References

Exploit1

github.com

Related Vulnerabilities

Other CWE-187 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-41110	Critical	9.9	16%	-	Fix
CVE-2022-31802	Critical	9.8	1.2%	-	Fix
CVE-2024-39742	High	8.1	0.8%	-	Fix
CVE-2026-35031	Critical	9.9	0.8%	-	Fix
CVE-2026-44837	Medium	5.9	0.4%	-	Fix
CVE-2026-34785	High	7.5	0.4%	-	Fix

Common questions

How do I fix CVE-2026-45692?

Upgrade caddy on debian unstable to 2.11.4-1 or later.

Is CVE-2026-45692 being actively exploited?

Not that we know of. CVE-2026-45692 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.17% is the estimated probability that it will be exploited in the next 30 days. That is higher than 6% of all scored CVEs.

How severe is CVE-2026-45692?

CVE-2026-45692 has a CVSS v3 base score of 5.4, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-45692 affect?

Published advisories record a fix for caddy (Debian). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-26.