VDB-346274 · Submit #751988 · CVE-2026-2623

Blossom up to 1.17.1 File Upload BLOSManager.java put path traversal

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.
6.9	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in Blossom up to 1.17.1. Impacted is the function put of the file blossom-backend/common/common-iaas/src/main/java/com/blossom/common/iaas/blos/BLOSManager.java of the component File Upload. Such manipulation leads to path traversal. This vulnerability is traded as CVE-2026-2623. The attack may be launched remotely. Furthermore, there is an exploit available. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability was found in Blossom up to 1.17.1. It has been rated as critical. Affected by this issue is the function put of the file blossom-backend/common/common-iaas/src/main/java/com/blossom/common/iaas/blos/BLOSManager.java of the component File Upload. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality, integrity, and availability.

The advisory is available at fx4tqqfvdw4.feishu.cn. This vulnerability is handled as CVE-2026-2623. The exploitation is known to be easy. The attack may be launched remotely. Technical details as well as a public exploit are known. This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

The exploit is available at fx4tqqfvdw4.feishu.cn. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Blossom

Version

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: 7.1
VulDB Meta Temp Score: 6.9

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔒

CNA Base Score: 6.3
CNA Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Path traversal
CWE: CWE-22
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

02/17/2026 Advisory disclosed
02/17/2026 +0 days VulDB entry created
02/21/2026 +4 days VulDB entry last update

Sourcesinfo

Advisory: fx4tqqfvdw4.feishu.cn
Status: Not defined

CVE: CVE-2026-2623 (🔒)
GCVE (CVE): GCVE-0-2026-2623
GCVE (VulDB): GCVE-100-346274
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 02/17/2026 11:29
Updated: 02/21/2026 17:40
Changes: 02/17/2026 11:29 (56), 02/18/2026 10:42 (30), 02/21/2026 17:40 (12)
Complete: 🔍
Submitter: xcxr
Cache ID: 216::103

Submitinfo

Accepted

Submit #751988: Blossom Blossom ≤ 1.17.1 Path Traversal (by xcxr)