Vulnerability · Published Feb 17, 2026 · Assigned by VulDB

CVE-2026-2623Blossom File Upload BLOSManager.java put path traversal

Medium 6.3

In plain English

A medium-severity path traversal in Blossom. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium

Exploit odds (30 days)0.7%top 46.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A flaw has been found in Blossom up to 1.17.1. This issue affects 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. This manipulation causes path traversal. The attack may be initiated remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
n/a	Blossom	1.17.01.17.1

Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

References

VDB-346274 | Blossom File Upload BLOSManager.java put path traversal vdb-entry, technical-description
VDB-346274 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #751988 | Blossom Blossom ≤ 1.17.1 Path Traversal third-party-advisory
https://fx4tqqfvdw4.feishu.cn/docx/WmA3dzNfto3AxlxoFlqcu5amnXe exploit