SPIP up to 4.4.19 var_export privileges management

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in SPIP up to 4.4.19. The impacted element is the function var_export. The manipulation results in privileges management. This vulnerability is reported as CVE-2026-77647. The attack can be launched remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in SPIP up to 4.4.19. It has been classified as critical. Affected is the function var_export. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

SPIP before 4.4.20 allows unauthenticated remote attackers to execute arbitrary code, as exploited in the wild in August 2026. This is related to incorrect identification of <?php blocks, and var_export's mishandling of certain cases such as presence of a '<' character.

The advisory is shared for download at blog.spip.net. This vulnerability is traded as CVE-2026-77647 since 08/21/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability scanner Nessus provides a plugin with the ID 338658 (Linux Distros Unpatched Vulnerability : CVE-2026-77647), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.4.20 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (338658) and EUVD (EUVD-2026-63757). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.8
CNA Vector (MITRE): 🔒

CVSSv2info

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

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
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: 338658
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-77647

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: SPIP 4.4.20

Timelineinfo

08/20/2026 VulDB entry created
08/21/2026 +0 days Advisory disclosed
08/21/2026 +0 days CVE reserved
08/21/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: blog.spip.net
Status: Confirmed

CVE: CVE-2026-77647 (🔒)
GCVE (CVE): GCVE-0-2026-77647
GCVE (VulDB): GCVE-100-393972
EUVD: 🔒

Entryinfo

Created: 08/21/2026 00:56
Updated: 08/21/2026 16:39
Changes: 08/21/2026 00:56 (63), 08/21/2026 01:31 (1), 08/21/2026 16:39 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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