Is CVE-2026-2623 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2026-2623, but active exploitation has not been confirmed.

Can CVE-2026-2623 be exploited remotely?

Yes. CVE-2026-2623 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-2623?

CVE-2026-2623 has a CVSS score of 6.3 (MEDIUM) and an EPSS exploitation probability of 0.11%.

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MEDIUMPOC

CVE-2026-2623

CWE-22Published: February 17, 2026· Updated: Feb 20, 2026

6.3

CVSS v3.1

EPSS:0.06%probability of exploitation in 30 daysPercentile:17.9th

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.

NVD Source

Technical Analysis

CVE-2026-2623 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A proof-of-concept (PoC) exploit exists for CVE-2026-2623. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.