CVE-2023-52430: The caddy-security plugin 1.1.20 for Caddy allows reflected XSS via a GET request to a URL that contains an XS

Routine

MEDIUM 6.1DOWNGRADE

CVE-2023-52430 is a medium-severity flaw (CVSS 6.1) affecting caddy-security. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The caddy-security plugin 1.1.20 for Caddy allows reflected XSS via a GET request to a URL that contains an XSS payload and begins with either a /admin or /settings/mfa/delete/ substring.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 69%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-02-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: authcrunch

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-02-12 23:15 UTCPublished CVE record published
2026-06-17 06:42 UTCUpdated Record last modified

authcrunch caddy-security DOWNGRADE

Affected: 1.1.20

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1.20

1. Check installed version

apt-cache policy caddy-security || rpm -q caddy-security || caddy-security --version

2. No fixed release: DOWNGRADE to a release before 1.1.20 (Debian / Ubuntu)

apt-cache madison caddy-security sudo apt install caddy-security=<VERSION_BEFORE_1.1.20> sudo apt-mark hold caddy-security

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list caddy-security sudo dnf downgrade caddy-security-<VERSION_BEFORE_1.1.20> sudo dnf versionlock add caddy-security

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-52430?

caddy-security: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-52430 being exploited?

CVE-2023-52430 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-52430 affect?

CVE-2023-52430 affects caddy-security. Severity is medium (CVSS 6.1). The caddy-security plugin 1.1.20 for Caddy allows reflected XSS via a GET request to a URL that contains an XSS payload and begins with either a /admin or /settings/mfa/delete/ substring.

How urgent is CVE-2023-52430?

Priority 29/100. No elevated risk signals yet.

Software pages

Caddy vulnerabilities

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References

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