VulnerabilityPublished 10 Apr 2024Updated 27 Aug 2024

CVE-2024-29504: summernote · Cross-site Scripting

Affects summernoteSource CVE Database V5

Not known to be exploited · CVSS 7.6 High.

Data as of 26 Oct 2026, 12:54 UTC

CVSS 3.1 base score

7.6High

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

EPSS: 0.6% chance of exploitation in 30 days – higher than 51% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: High
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: None: The vulnerable system can be exploited without any interaction from any user.
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: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
Integrity: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to 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 10 Apr 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 or the CVSS exploit maturity 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

Affected software

Product	Affected	Fixed in
GitHubsummernote/summernote`pkg:github/summernote/summernote`Other threats	Affected <=0.8.18	Fixed in–

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-2024-29504, organizations should immediately upgrade Summernote to a version patched against this vulnerability once available. In the absence of an official patch, implement strict input validation and output encoding on the 'codeview' parameter to neutralize malicious scripts. Employ Content Security Policy (CSP) headers to restrict script execution sources and reduce the impact of XSS attacks. Review and minimize user privileges to limit the ability of attackers to exploit this vulnerability. Conduct thorough security testing of web applications incorporating Summernote, focusing on input sanitization and XSS vectors. Additionally, monitor web application logs for suspicious activities related to the 'codeview' parameter and consider deploying Web Application Firewalls (WAFs) with custom rules to detect and block exploit attempts. Educate developers on secure coding practices to prevent similar vulnerabilities in future integrations.

Description

Cross Site Scripting vulnerability in Summernote v.0.8.18 and before allows a remote attacker to execute arbtirary code via a crafted payload to the codeview parameter.

Impact

The impact of CVE-2024-29504 is significant for organizations using vulnerable versions of Summernote in their web applications. An attacker with low privileges can execute arbitrary scripts, potentially leading to unauthorized data modification, session hijacking, or further compromise of the application environment. This can undermine data integrity, cause partial confidentiality breaches by exposing sensitive information, and degrade availability through malicious script execution. The vulnerability can facilitate lateral movement within networks if exploited in intranet or internal applications. Organizations in sectors such as finance, healthcare, government, and e-commerce, where data integrity and confidentiality are critical, face heightened risks. Additionally, the widespread adoption of Summernote in global web applications means the threat surface is broad, affecting enterprises, small businesses, and public sector entities worldwide.

Summary

CVE-2024-29504 is a Cross-Site Scripting (XSS) vulnerability identified in Summernote, an open-source WYSIWYG editor widely used in web applications for rich text editing. The flaw exists in versions 0.8.18 and earlier, where the 'codeview' parameter fails to properly sanitize user input, allowing an attacker to inject malicious scripts. This vulnerability is classified under CWE-79, indicating improper neutralization of input during web page generation. The attack vector is network-based (AV:N), requiring low attack complexity (AC:L) but some privileges (PR:L), and no user interaction (UI:N). Successful exploitation can lead to arbitrary code execution within the context of the vulnerable web application, potentially enabling attackers to manipulate content, steal sensitive information, or perform actions on behalf of legitimate users. The CVSS v3.1 base score is 7.6, reflecting high severity due to the significant impact on integrity and moderate impact on confidentiality and availability. Although no exploits are currently known in the wild, the vulnerability poses a substantial risk given Summernote's popularity and the ease of exploitation once privileges are obtained.

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

Community reviews

Loading reviews…

Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Feb 2026, 16:57 UTC

WeaknessesCWE-79

Technical details

References

Community reviews

Related threats