CVE-2023-50982: Stud.IP 5.x through 5.3.3 allows XSS with resultant upload of executable files, because upload_action and edit

This month

CRITICAL 9.0UPGRADE

CVE-2023-50982 is a critical-severity flaw (CVSS 9.0) affecting stud.ip. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stud.IP 5.x through 5.3.3 allows XSS with resultant upload of executable files, because upload_action and edit_action in Admin_SmileysController do not check the file extension. This leads to remote code execution with the privileges of the www-data user. The fixed versions are 5.3.4, 5.2.6, 5.1.7, and 5.0.9.

Why this priority

Critical severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	9.0 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-79, CWE-434
Published	2024-01-08
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: studip

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

Am I affected?

Timeline

2024-01-08 20:15 UTCPublished CVE record published
2026-06-17 06:40 UTCUpdated Record last modified

studip stud.ip UPGRADE

Affected: < 5.0.9 · >= 5.1 and < 5.1.7 · >= 5.2 and < 5.2.6 · >= 5.3 and < 5.3.4

Fixed in: 5.0.9, 5.1.7, 5.2.6, 5.3.4

Safe to downgrade to: a release before 5.1

1. Check installed version

apt-cache policy stud.ip || rpm -q stud.ip || stud.ip --version

2. UPGRADE to 5.0.9 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade stud.ip

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade stud.ip

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 5.1 (Debian / Ubuntu)

apt-cache madison stud.ip sudo apt install stud.ip=<VERSION_BEFORE_5.1> sudo apt-mark hold stud.ip

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list stud.ip sudo dnf downgrade stud.ip-<VERSION_BEFORE_5.1> sudo dnf versionlock add stud.ip

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-2023-50982?

stud.ip: upgrade to 5.0.9, 5.1.7, 5.2.6, 5.3.4. Exact commands for each OS are on this page.

Is CVE-2023-50982 being exploited?

CVE-2023-50982 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-2023-50982 affect?

CVE-2023-50982 affects stud.ip. Severity is critical (CVSS 9.0). Stud.IP 5.x through 5.3.3 allows XSS with resultant upload of executable files, because upload_action and edit_action in Admin_SmileysController do not check the file extension. This leads to remote code execution with the privileges of the

How urgent is CVE-2023-50982?

Priority 54/100. Critical severity; Public exploit reference

References

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