SPIP up to 4.4.7 echapper_html_suspect cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability was found in SPIP up to 4.4.7. It has been rated as problematic. Affected by this issue is the function echapper_html_suspect. Performing a manipulation results in cross site scripting. This vulnerability is identified as CVE-2026-26345. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic has been found in SPIP up to 4.4.7. This affects the function echapper_html_suspect. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity. The summary by CVE is:

SPIP before 4.4.8 allows Cross-Site Scripting (XSS) in the public area for certain edge-case usage patterns. The echapper_html_suspect() function does not adequately detect all forms of malicious content, permitting an attacker to inject scripts that execute in a visitor's browser. This vulnerability is not mitigated by the SPIP security screen.

The weakness was released by Arthur Deloffre. The advisory is shared at blog.spip.net. This vulnerability is uniquely identified as CVE-2026-26345 since 02/13/2026. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 299638 (Linux Distros Unpatched Vulnerability : CVE-2026-26345), 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 (299638). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Name

Version

License

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: 4.2
VulDB Meta Temp Score: 4.2

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.4
CNA Vector (VulnCheck): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔒

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Nessus ID: 299638
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-26345

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: SPIP 4.4.8

Timelineinfo

02/13/2026 CVE reserved
02/19/2026 +6 days Advisory disclosed
02/19/2026 +0 days VulDB entry created
02/22/2026 +3 days VulDB entry last update

Sourcesinfo

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

CVE: CVE-2026-26345 (🔒)
GCVE (CVE): GCVE-0-2026-26345
GCVE (VulDB): GCVE-100-346941

Entryinfo

Created: 02/19/2026 17:57
Updated: 02/22/2026 03:48
Changes: 02/19/2026 17:57 (77), 02/21/2026 08:33 (2), 02/22/2026 03:48 (11)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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