CVE-2018-11557: YIBAN Easy class education platform 2.0 has XSS via the articlelist.php k parameter.

Routine

MEDIUM 6.1DOWNGRADE

CVE-2018-11557 is a medium-severity flaw (CVSS 6.1) affecting easy class education platform. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

YIBAN Easy class education platform 2.0 has XSS via the articlelist.php k parameter.

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	0.6% (top 49%)
CISA exploited list	No
Weakness	CWE-79
Published	2018-05-30
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: yiban

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

Am I affected?

Timeline

2018-05-30 04:29 UTCPublished CVE record published
2026-06-17 01:36 UTCUpdated Record last modified

yiban easy class education platform DOWNGRADE

Affected: 2.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0

1. Check installed version

apt-cache policy easy-class-education-platform || rpm -q easy-class-education-platform || easy-class-education-platform --version

2. No fixed release: DOWNGRADE to a release before 2.0 (Debian / Ubuntu)

apt-cache madison easy-class-education-platform sudo apt install easy-class-education-platform=<VERSION_BEFORE_2.0> sudo apt-mark hold easy-class-education-platform

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

dnf --showduplicates list easy-class-education-platform sudo dnf downgrade easy-class-education-platform-<VERSION_BEFORE_2.0> sudo dnf versionlock add easy-class-education-platform

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-2018-11557?

easy class education platform: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-11557 being exploited?

CVE-2018-11557 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-2018-11557 affect?

CVE-2018-11557 affects easy class education platform. Severity is medium (CVSS 6.1). YIBAN Easy class education platform 2.0 has XSS via the articlelist.php k parameter.

How urgent is CVE-2018-11557?

Priority 34/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

References

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