SPIP up to 4.4.9 authentication bypass

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in SPIP up to 4.4.9. This issue affects some unknown processing. This manipulation causes authentication bypass. This vulnerability is registered as CVE-2026-22205. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in SPIP up to 4.4.9. It has been declared as critical. Affected by this vulnerability is an unknown functionality. The manipulation with an unknown input leads to a authentication bypass vulnerability. The CWE definition for the vulnerability is CWE-288. A product requires authentication, but the product has an alternate path or channel that does not require authentication. As an impact it is known to affect confidentiality. The summary by CVE is:

SPIP versions prior to 4.4.10 contain an authentication bypass vulnerability caused by PHP type juggling that allows unauthenticated attackers to access protected information. Attackers can exploit loose type comparisons in authentication logic to bypass login verification and retrieve sensitive internal data.

The weakness was published by Arthur Deloffre. It is possible to read the advisory at blog.spip.net. This vulnerability is known as CVE-2026-22205 since 01/06/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 300213 (Linux Distros Unpatched Vulnerability : CVE-2026-22205), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.4.10 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (300213). Be aware that VulDB is the high quality source for vulnerability data.

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: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (VulnCheck): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authentication bypass
CWE: CWE-288 / CWE-287
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: 300213
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-22205

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: SPIP 4.4.10

Timelineinfo

01/06/2026 CVE reserved
02/26/2026 +51 days Advisory disclosed
02/26/2026 +0 days VulDB entry created
03/03/2026 +5 days VulDB entry last update

Sourcesinfo

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

CVE: CVE-2026-22205 (🔒)
GCVE (CVE): GCVE-0-2026-22205
GCVE (VulDB): GCVE-100-348055

Entryinfo

Created: 02/26/2026 22:19
Updated: 03/03/2026 11:09
Changes: 02/26/2026 22:19 (67), 03/01/2026 15:35 (12), 03/03/2026 11:09 (2)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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