High severity · published Feb 17, 2026
CVE-2026-2623
Blossom File Upload BLOSManager.java put path traversal
8.8
CVSS
0.7%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 53% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BL
Blossom ·
1.17.0; 1.17.1 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-2623
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-2623
Exploit
https://fx4tqqfvdw4.feishu.cn/docx/WmA3dzNfto3AxlxoFlqcu5amnXe
Third Party Advisory
https://vuldb.com/?ctiid.346274
Third Party Advisory
https://vuldb.com/?id.346274
Third Party Advisory
https://vuldb.com/?submit.751988
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