CVE-2025-52206: ISPConfig 3.3.0 is vulnerable to Cross Site Scripting (XSS) via the system status webpage.

Routine

MEDIUM 4.7DOWNGRADE

CVE-2025-52206 is a medium-severity flaw (CVSS 4.7) affecting ispconfig. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ISPConfig 3.3.0 is vulnerable to Cross Site Scripting (XSS) via the system status webpage.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.7 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 89%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-05-05
Last modified	2026-10-15

Publisher (CNA): MITRE · Vendor: ispconfig

Last updated 2026-10-15 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-05 16:16 UTCPublished CVE record published
2026-10-15 19:10 UTCUpdated Record last modified

ispconfig ispconfig DOWNGRADE

Affected: 3.3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.3.0

1. Check installed version

apt-cache policy ispconfig || rpm -q ispconfig || ispconfig --version

2. No fixed release: DOWNGRADE to a release before 3.3.0 (Debian / Ubuntu)

apt-cache madison ispconfig sudo apt install ispconfig=<VERSION_BEFORE_3.3.0> sudo apt-mark hold ispconfig

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

dnf --showduplicates list ispconfig sudo dnf downgrade ispconfig-<VERSION_BEFORE_3.3.0> sudo dnf versionlock add ispconfig

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-2025-52206?

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

Is CVE-2025-52206 being exploited?

CVE-2025-52206 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-2025-52206 affect?

CVE-2025-52206 affects ispconfig. Severity is medium (CVSS 4.7). ISPConfig 3.3.0 is vulnerable to Cross Site Scripting (XSS) via the system status webpage.

How urgent is CVE-2025-52206?

Priority 19/100. No elevated risk signals yet.

References

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