CVE-2024-24724: Gibbon through 26.0.00 allows /modules/School%20Admin/messengerSettings.php Server Side Template Injection lea

Q: How do I fix CVE-2024-24724?

gibbon: upgrade to newer than 26.0.00. Exact commands for each OS are on this page.

Q: Is CVE-2024-24724 being exploited?

CVE-2024-24724 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-24724 affect?

CVE-2024-24724 affects gibbon. Severity is critical (CVSS 9.8). Gibbon through 26.0.00 allows /modules/School%20Admin/messengerSettings.php Server Side Template Injection leading to Remote Code Execution because input is passed to the Twig template engine (messengerSettings.php) without sanitization.

Q: How urgent is CVE-2024-24724?

Priority 72/100. Critical severity; EPSS top 2%: very likely to be exploited; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2024-24724 is a critical-severity flaw (CVSS 9.8) affecting gibbon. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Gibbon through 26.0.00 allows /modules/School%20Admin/messengerSettings.php Server Side Template Injection leading to Remote Code Execution because input is passed to the Twig template engine (messengerSettings.php) without sanitization.

Why this priority

Critical severity
EPSS top 2%: very likely to be exploited
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	26.1% (top 2%)
CISA exploited list	No
Weakness	CWE-1336
Published	2024-04-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: gibbonedu

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

Am I affected?

Timeline

2024-04-03 03:15 UTCPublished CVE record published
2026-06-17 07:14 UTCUpdated Record last modified

gibbonedu gibbon UPGRADE

Affected: <= 26.0.00

Fixed in: newer than 26.0.00

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy gibbon || rpm -q gibbon || gibbon --version

2. UPGRADE to newer than 26.0.00 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade gibbon

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade gibbon

Note

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

Exact fixes by distribution

Fedora ELN · efifs · FIXED · 1.13-1.eln159 · FEDORA-2026-3fd0bb7307 · source

sudo dnf upgrade --advisory=FEDORA-2026-3fd0bb7307

Fedora 46 · efifs · FIXED · 1.13-1.fc46 · FEDORA-2026-27ec2fc8fc · source

sudo dnf upgrade --advisory=FEDORA-2026-27ec2fc8fc

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: packetstormsecurity.com/files/177857
Exploit-DB: Gibbon LMS v26.0.00 - SSTI vulnerability

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-2024-24724?

gibbon: upgrade to newer than 26.0.00. Exact commands for each OS are on this page.

Is CVE-2024-24724 being exploited?

CVE-2024-24724 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-2024-24724 affect?

CVE-2024-24724 affects gibbon. Severity is critical (CVSS 9.8). Gibbon through 26.0.00 allows /modules/School%20Admin/messengerSettings.php Server Side Template Injection leading to Remote Code Execution because input is passed to the Twig template engine (messengerSettings.php) without sanitization.

How urgent is CVE-2024-24724?

Priority 72/100. Critical severity; EPSS top 2%: very likely to be exploited; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2025-26211 LOW 3.7 UPGRADE Gibbon before 29.0.00 allows CSRF.
CVE-2024-51337 LOW 3.5 UPGRADE Cross Site Scripting vulnerability in Gibbon before v.27.0.01 and fixed in v.28.0.00 allows a remote attacker
CVE-2024-34831 MEDIUM 6.1 DOWNGRADE cross-site scripting (XSS) vulnerability in Gibbon Core v26.0.00 allows an attacker to execute arbitrary code
CVE-2024-24725 HIGH 8.8 UPGRADE Gibbon through 26.0.00 allows remote authenticated users to conduct PHP deserialization attacks via columnOrde

References

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