CVE-2026-22187
Bio-Formats <= 8.3.0 Memoizer Unsafe Deserialization via .bfmemo Cache Files
MEDIUM 6.8EPSS 0.5%
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.
- Affected
- Open Microscopy Environment · Bio-Formats
- CVSS v4.0 VULNCHECK
- 6.8 MEDIUM
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS v4.0 GitHub
- 6.8 MEDIUM
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 - CVSS v3.1 NVD
- 7.8 HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS
- 0.51% chance of exploitation in the next 30 days, 42nd percentile
- Published
- 2026-01-07
- Updated
- 2026-10-08
Proof-of-concept exploits (2)
- https://seclists.org/fulldisclosure/2026/Jan/7
- George0Papasotiriou/CVE-2026-22187-Bio-Formats-unsafe-Java-deserialization-via-.bfmemo1★ · 2026-02-09
Security advisories
- https://www.vulncheck.com/advisories/bio-formats-memoizer-unsafe-deserialization-via-bfme…
- advisories/GHSA-qjm3-cvp9-3jj3
- https://docs.openmicroscopy.org/bio-formats