VulnerabilityPublished 21 Nov 2024

CVE-2024-51337: core · Cross-site Scripting

Affects coreSource CVE Database V5

Not known to be exploited · CVSS 3.5 Low : upgrade to 27.0.01 when convenient.

Data as of 26 Oct 2026, 09:08 UTC

CVSS 3.1 base score

3.5Low

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.6% chance of exploitation in 30 days – higher than 49% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 27.0.01

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: Required
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: Low

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the impacted component are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 21 Nov 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade gibbonedu/core to 27.0.01.

Affected software

Product	Affected	Fixed in
GitHubgibbonedu/core`pkg:github/gibbonedu/core`Other threats	Affected <27.0.01	Fixed in 27.0.01

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

To mitigate CVE-2024-51337, organizations should upgrade Gibbon installations to version 28.0.00 or later, where the vulnerability is fixed. In addition to patching, administrators should implement strict input validation and output encoding for all user-supplied data, especially parameters like email addresses in administrative modules. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. Limit user privileges to the minimum necessary to reduce the risk of exploitation by low-privilege attackers. Educate users and administrators about the risks of clicking on suspicious links or interacting with untrusted content within the application. Regularly audit and monitor logs for unusual activity related to user management functions. If immediate patching is not feasible, consider disabling or restricting access to the vulnerable module temporarily. Finally, maintain an up-to-date inventory of Gibbon versions deployed to ensure timely application of security updates.

Description

Cross Site Scripting vulnerability in Gibbon before v.27.0.01 and fixed in v.28.0.00 allows a remote attacker to obtain sensitive information via the email parameter found in /Gibbon/modules/User Admin/user_manage_editProcess.php.

Impact

The primary impact of CVE-2024-51337 is limited availability disruption due to potential script execution in the victim's browser, which could cause session interruptions or denial of service conditions. Since the vulnerability requires limited privileges and user interaction, the attack surface is constrained, reducing the likelihood of widespread exploitation. Confidentiality and integrity of data are not directly affected, minimizing risks of data theft or unauthorized modification. However, in environments where Gibbon is used to manage sensitive educational data and user accounts, even limited disruptions can affect operational continuity and user trust. Organizations relying on affected versions may face targeted attacks aiming to disrupt administrative functions or user sessions. The absence of known exploits in the wild lowers immediate risk but does not eliminate the need for remediation. Overall, the impact is low but non-negligible for institutions dependent on Gibbon for critical administrative tasks.

Summary

CVE-2024-51337 is a Cross Site Scripting (XSS) vulnerability identified in the Gibbon open-source school management system, specifically affecting versions prior to 27.0.01 and resolved in version 28.0.00. The vulnerability resides in the email parameter processed by the user_manage_editProcess.php script within the User Admin module. An attacker with at least limited privileges (PR:L) and requiring user interaction (UI:R) can craft malicious input that is not properly sanitized, leading to script injection. This can result in the execution of arbitrary scripts in the context of the victim's browser session. The vulnerability does not directly compromise confidentiality or integrity but can affect availability, likely through disruption or denial of service mechanisms triggered by the injected scripts. The CVSS v3.1 base score is 3.5, reflecting a low severity due to the need for privileges and user interaction, and the limited impact scope. No public exploits have been reported, indicating low current threat activity. The vulnerability is classified under CWE-79, a common category for XSS issues. The patch is included in Gibbon version 28.0.00, and users are advised to upgrade to this or later versions to remediate the issue.

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (opens in a new tab)
Base weaknessLikelihood of exploit: HighCWE Top 25 (2025): #1OWASP Top 10 A05:2025: Injection (opens in a new tab)
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
Architecture and Design · Libraries or Frameworks
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Implementation · Architecture and Design
Understand the context in which your data will be used and the encoding that will be expected. This is especially important when transmitting data between different components, or when generating outputs that can contain multiple encodings at the same time, such as web pages or multi-part mail messages.
Architecture and Design · Implementation · Attack Surface Reduction
Understand all the potential areas where untrusted inputs can enter your software: parameters or arguments, cookies, anything read from the network, environment variables, reverse DNS lookups, query results, request headers, URL components, e-mail, files, filenames, databases, and any external systems that provide…
OWASP Cheat Sheets
Cross Site Scripting Prevention (opens in a new tab)
DOM based XSS Prevention (opens in a new tab)
Injection Prevention (opens in a new tab)
Abuse Case (opens in a new tab)
Deserialization (opens in a new tab)
OWASP ASVS 4.0.3
V5.3.3 (opens in a new tab)
V1.5.1 (opens in a new tab)
Attack patterns
XSS Using MIME Type Mismatch (opens in a new tab)
DOM-Based XSS (opens in a new tab)
Reflected XSS (opens in a new tab)
Stored XSS (opens in a new tab)
Cross-Site Scripting (XSS) (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Feb 2026, 01:29 UTC

WeaknessesCWE-79

Technical details

References

Community reviews

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