CVE-2026-116100: A vulnerability has been found in gougucms up to 4.08.18

Routine

LOW 2.4DOWNGRADE

CVE-2026-116100 is a low-severity flaw (CVSS 2.4) affecting gougucms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability has been found in gougucms up to 4.08.18. Impacted is the function Add of the file app/admin/controller/Level.php of the component User Level Handler. The manipulation of the argument Title leads to cross site scripting. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	2.4 (Low)
EPSS exploit chance	n/a
CISA exploited list	No
Weakness	CWE-79, CWE-94
Published	2026-10-26
Last modified	2026-10-26

Publisher (CNA): VulDB · Vendor: n a · Source: CVE Program record (NVD analysis pending)

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-10-26 00:00 UTCPublished CVE record published
2026-10-26 00:00 UTCUpdated Record last modified

n a gougucms DOWNGRADE

Affected: 4.08.0 · 4.08.1 · 4.08.2 · 4.08.3 · 4.08.4 · 4.08.5 · 4.08.6 · 4.08.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.08.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.08.0 (Debian / Ubuntu)

apt-cache madison gougucms sudo apt install gougucms=<VERSION_BEFORE_4.08.0> sudo apt-mark hold gougucms

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

dnf --showduplicates list gougucms sudo dnf downgrade gougucms-<VERSION_BEFORE_4.08.0> sudo dnf versionlock add gougucms

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-2026-116100?

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

Is CVE-2026-116100 being exploited?

CVE-2026-116100 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-2026-116100 affect?

CVE-2026-116100 affects gougucms. Severity is low (CVSS 2.4). A vulnerability has been found in gougucms up to 4.08.18. Impacted is the function Add of the file app/admin/controller/Level.php of the component User Level Handler. The manipulation of the argument Title leads to cross site scripting. The

How urgent is CVE-2026-116100?

Priority 8/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

References

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