CVE-2025-57205: iNiLabs School Express (SMS Express) 6.2 is affected by a Stored Cross-Site Scripting (XSS) vulnerability in t

Routine

MEDIUM 5.4DOWNGRADE

CVE-2025-57205 is a medium-severity flaw (CVSS 5.4) affecting school express. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

iNiLabs School Express (SMS Express) 6.2 is affected by a Stored Cross-Site Scripting (XSS) vulnerability in the content-management features available to authenticated admin users. The vulnerability resides in POSTed editor parameters submitted to the /posts/edit/{id} endpoint (and similarly in Notice and Pages editors). Due to insufficient input sanitization and output encoding, attackers can inject HTML/JS payloads. The payload is saved and lat

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.3% (top 82%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-09-22
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: inilabs

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

Am I affected?

Timeline

2025-09-22 21:15 UTCPublished CVE record published
2026-06-17 09:42 UTCUpdated Record last modified

inilabs school express DOWNGRADE

Affected: 6.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 6.2 (Debian / Ubuntu)

apt-cache madison school-express sudo apt install school-express=<VERSION_BEFORE_6.2> sudo apt-mark hold school-express

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

dnf --showduplicates list school-express sudo dnf downgrade school-express-<VERSION_BEFORE_6.2> sudo dnf versionlock add school-express

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-2025-57205?

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

Is CVE-2025-57205 being exploited?

CVE-2025-57205 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-2025-57205 affect?

CVE-2025-57205 affects school express. Severity is medium (CVSS 5.4). iNiLabs School Express (SMS Express) 6.2 is affected by a Stored Cross-Site Scripting (XSS) vulnerability in the content-management features available to authenticated admin users. The vulnerability resides in POSTed editor parameters submi

How urgent is CVE-2025-57205?

Priority 28/100. Public exploit reference

References

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