CVE-2025-11189: The Kiwire Captive Portal contains a reflected cross-site scripting (XSS) vulnerability within the login-url p

Routine

HIGH 7.3REMOTEDOWNGRADE

CVE-2025-11189 is a high-severity flaw (CVSS 7.3) affecting kiwire. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Kiwire Captive Portal contains a reflected cross-site scripting (XSS) vulnerability within the login-url parameter, allowing for Javascript execution.

Why this priority

High severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 68%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-10-10
Last modified	2026-10-08

Publisher (CNA): CERT/CC · Vendor: synchroweb

Last updated 2026-10-08 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-10-10 11:15 UTCPublished CVE record published
2026-10-08 13:10 UTCUpdated Record last modified

synchroweb kiwire DOWNGRADE

Affected: 3.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.6

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.6 (Debian / Ubuntu)

apt-cache madison kiwire sudo apt install kiwire=<VERSION_BEFORE_3.6> sudo apt-mark hold kiwire

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

dnf --showduplicates list kiwire sudo dnf downgrade kiwire-<VERSION_BEFORE_3.6> sudo dnf versionlock add kiwire

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-2025-11189?

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

Is CVE-2025-11189 being exploited?

CVE-2025-11189 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-2025-11189 affect?

CVE-2025-11189 affects kiwire. Severity is high (CVSS 7.3). The Kiwire Captive Portal contains a reflected cross-site scripting (XSS) vulnerability within the login-url parameter, allowing for Javascript execution.

How urgent is CVE-2025-11189?

Priority 39/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-11188 HIGH 7.3 DOWNGRADE The Kiwire Captive Portal contains a blind SQL injection in the nas-id parameter, allowing for SQL commands to
CVE-2025-11190 MEDIUM 5.4 DOWNGRADE The Kiwire Captive Portal contains an open redirection issue via the login-url parameter, allowing an attacker

References

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