VDB-346940 · CVE-2026-26223 · Nessus 299643

SPIP up to 4.4.7 iFrame cross site scripting

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in SPIP up to 4.4.7. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the component iFrame Handler. Such manipulation leads to cross site scripting. This vulnerability is referenced as CVE-2026-26223. It is possible to launch the attack remotely. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in SPIP up to 4.4.7. It has been rated as problematic. Affected by this issue is some unknown processing of the component iFrame Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. 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. Impacted is integrity. CVE summarizes:

SPIP before 4.4.8 allows Cross-Site Scripting (XSS) in the private area via malicious iframe tags. The application does not properly sandbox or escape iframe content in the back-office, allowing an attacker to inject and execute malicious scripts. The fix adds a sandbox attribute to iframe tags in the private area. This vulnerability is not mitigated by the SPIP security screen.

The weakness was published by Arthur Deloffre. The advisory is shared for download at blog.spip.net. This vulnerability is handled as CVE-2026-26223 since 02/11/2026. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

The vulnerability scanner Nessus provides a plugin with the ID 299643 (Linux Distros Unpatched Vulnerability : CVE-2026-26223), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.4.8 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (299643). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Content Management System

Name

SPIP

Version

License

free

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.2

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔒

CNA Base Score: 6.1
CNA Vector (VulnCheck): 🔒

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 299643
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-26223

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: SPIP 4.4.8

Timelineinfo

02/11/2026 CVE reserved
02/19/2026 +8 days Advisory disclosed
02/19/2026 +0 days VulDB entry created
03/03/2026 +12 days VulDB entry last update

Sourcesinfo

Advisory: blog.spip.net
Researcher: Arthur Deloffre
Status: Confirmed

CVE: CVE-2026-26223 (🔒)
GCVE (CVE): GCVE-0-2026-26223
GCVE (VulDB): GCVE-100-346940

Entryinfo

Created: 02/19/2026 17:57
Updated: 03/03/2026 05:21
Changes: 02/19/2026 17:57 (77), 02/21/2026 06:56 (2), 02/22/2026 03:48 (4), 03/03/2026 05:21 (14)
Complete: 🔍
Cache ID: 216::103