CVE-2014-9126: Multiple cross-site scripting (XSS) vulnerabilities in Open-School Community Edition 2.2 allow remote attacker

This month

MEDIUM 6.1DOWNGRADE

CVE-2014-9126 is a medium-severity flaw (CVSS 6.1) affecting open-school. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple cross-site scripting (XSS) vulnerabilities in Open-School Community Edition 2.2 allow remote attackers to inject arbitrary web script or HTML via the YII_CSRF_TOKEN HTTP cookie or the StudentDocument, StudentCategories, StudentPreviousDatas parameters to index.php.

Why this priority

Public exploit reference

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	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-79
Published	2020-02-08
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: open-school

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

Am I affected?

Timeline

2020-02-08 17:15 UTCPublished CVE record published
2026-06-17 00:17 UTCUpdated Record last modified

open-school open-school DOWNGRADE

Affected: 2.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.2

1. Check installed version

apt-cache policy open-school || rpm -q open-school || open-school --version

2. No fixed release: DOWNGRADE to a release before 2.2 (Debian / Ubuntu)

apt-cache madison open-school sudo apt install open-school=<VERSION_BEFORE_2.2> sudo apt-mark hold open-school

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

dnf --showduplicates list open-school sudo dnf downgrade open-school-<VERSION_BEFORE_2.2> sudo dnf versionlock add open-school

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-2014-9126?

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

Is CVE-2014-9126 being exploited?

CVE-2014-9126 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-2014-9126 affect?

CVE-2014-9126 affects open-school. Severity is medium (CVSS 6.1). Multiple cross-site scripting (XSS) vulnerabilities in Open-School Community Edition 2.2 allow remote attackers to inject arbitrary web script or HTML via the YII_CSRF_TOKEN HTTP cookie or the StudentDocument, StudentCategories, StudentPrev

How urgent is CVE-2014-9126?

Priority 43/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2014-9127 MEDIUM 6.5 DOWNGRADE Open-School Community Edition 2.2 does not properly restrict access to the export functionality, which allows

References

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