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

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-02-17 · updated 2026-06-17
Weakness: CWE-22

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

Blossom: through 1.17.1

References

https://fx4tqqfvdw4.feishu.cn/docx/WmA3dzNfto3AxlxoFlqcu5amnXe
https://vuldb.com/?ctiid.346274
https://vuldb.com/?id.346274
https://vuldb.com/?submit.751988

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