Bio-Formats versions up to and including 8.3.0 perform unsafe Java deserialization of attacker-controlled memoization cache files (.bfmemo) during image processing. The loci.formats.Memoizer class automatically loads and deserializes memo files associated with images without validation, integrity checks, or trust enforcement. An attacker who can supply a crafted .bfmemo file alongside an image can trigger deserialization of untrusted data, which may result in denial of service, logic manipulation, or potentially remote code execution in environments where suitable gadget chains are present on the classpath.
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-qjm3-cvp9-3jj3 Bio-Formats performs unsafe Java deserialization of attacker-controlled memoization cache files (.bfmemo) during image processing
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 07 Jan 2026 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 07 Jan 2026 20:45:00 +0000

Type Values Removed Values Added
Description Bio-Formats versions up to and including 8.3.0 perform unsafe Java deserialization of attacker-controlled memoization cache files (.bfmemo) during image processing. The loci.formats.Memoizer class automatically loads and deserializes memo files associated with images without validation, integrity checks, or trust enforcement. An attacker who can supply a crafted .bfmemo file alongside an image can trigger deserialization of untrusted data, which may result in denial of service, logic manipulation, or potentially remote code execution in environments where suitable gadget chains are present on the classpath.
Title Bio-Formats <= 8.3.0 Memoizer Unsafe Deserialization via .bfmemo Cache Files
Weaknesses CWE-502
References
Metrics cvssV4_0

{'score': 6.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-01-07T21:34:15.949Z

Reserved: 2026-01-06T16:47:17.182Z

Link: CVE-2026-22187

cve-icon Vulnrichment

Updated: 2026-01-07T21:32:16.195Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-01-07T21:16:02.600

Modified: 2026-01-08T18:08:54.147

Link: CVE-2026-22187

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses