getk2 K2 Extension 1.0-2.26 on Joomla TAR Archive /media/k2/galleries unrestricted upload

CVSS Meta Temp Score
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Current Exploit Price (≈)
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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.
6.3$0-$5k1.25-

Summaryinfo

A vulnerability was found in getk2 K2 Extension 1.0-2.26 on Joomla. It has been rated as critical. The impacted element is an unknown function of the file /media/k2/galleries of the component TAR Archive Handler. The manipulation leads to unrestricted upload. This vulnerability is traded as CVE-2026-48945. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in getk2 K2 Extension 1.0-2.26 on Joomla and classified as critical. This issue affects an unknown function of the file /media/k2/galleries of the component TAR Archive Handler. The manipulation with an unknown input leads to a unrestricted upload vulnerability. Using CWE to declare the problem leads to CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The K2 article gallery upload path accepts a zip/tar archive, extracts it under `/media/k2/galleries//`, and only renames image files (gif/jpg/jpeg/png/webp) to safe names — non-image files (including `.php`) are extracted as-is and remain executable via direct HTTP access.

The weakness was shared by Matan Bahar. The identification of this vulnerability is CVE-2026-48945 since 05/26/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/25/2026). The attack technique deployed by this issue is T1608.002 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Unrestricted upload
CWE: CWE-434 / CWE-284 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

05/26/2026 CVE reserved
06/25/2026 +30 days Advisory disclosed
06/25/2026 +0 days VulDB entry created
06/25/2026 +0 days VulDB entry last update

Sourcesinfo

Researcher: Matan Bahar
Status: Not defined

CVE: CVE-2026-48945 (🔒)
GCVE (CVE): GCVE-0-2026-48945
GCVE (VulDB): GCVE-100-373919

Entryinfo

Created: 06/25/2026 17:52
Changes: 06/25/2026 17:52 (56)
Complete: 🔍
Cache ID: 216::103

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