CVE-2020-37090: School ERP Pro 1.0 contains a file upload vulnerability that allows students to upload arbitrary PHP files to

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2020-37090 is a critical-severity flaw (CVSS 9.8) affecting school erp pro. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

School ERP Pro 1.0 contains a file upload vulnerability that allows students to upload arbitrary PHP files to the messaging system. Attackers can upload malicious PHP scripts through the message attachment feature, enabling remote code execution on the server.

Why this priority

Critical severity
Public exploit reference
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-434
Published	2026-02-03
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: arox

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

Am I affected?

Timeline

2026-02-03 22:16 UTCPublished CVE record published
2026-06-17 03:16 UTCUpdated Record last modified

arox school erp pro DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy school-erp-pro || rpm -q school-erp-pro || school-erp-pro --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison school-erp-pro sudo apt install school-erp-pro=<VERSION_BEFORE_1.0> sudo apt-mark hold school-erp-pro

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

dnf --showduplicates list school-erp-pro sudo dnf downgrade school-erp-pro-<VERSION_BEFORE_1.0> sudo dnf versionlock add school-erp-pro

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.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · proftpd · FIXED · 1.3.9e-2.fc46 · FEDORA-2026-fcb0a25c2f · source

sudo dnf upgrade --advisory=FEDORA-2026-fcb0a25c2f

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: www.exploit-db.com/exploits/48392

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-2020-37090?

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

Is CVE-2020-37090 being exploited?

CVE-2020-37090 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-2020-37090 affect?

CVE-2020-37090 affects school erp pro. Severity is critical (CVSS 9.8). School ERP Pro 1.0 contains a file upload vulnerability that allows students to upload arbitrary PHP files to the messaging system. Attackers can upload malicious PHP scripts through the message attachment feature, enabling remote code exec

How urgent is CVE-2020-37090?

Priority 62/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2020-37089 HIGH 8.2 DOWNGRADE School ERP Pro 1.0 contains a SQL injection vulnerability in the 'es_messagesid' parameter that allows attacke
CVE-2020-37088 HIGH 7.5 DOWNGRADE School ERP Pro 1.0 contains a file disclosure vulnerability that allows unauthenticated attackers to read arbi
CVE-2020-37084 HIGH 7.2 DOWNGRADE School ERP Pro 1.0 contains a remote code execution vulnerability that allows authenticated admin users to upl

References

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