CVE-2026-22187 json
Bio-Formats <= 8.3.0 Memoizer Unsafe Deserialization via .bfmemo Cache Files
published 2026-01-07 10 mo ago modified 2026-10-08 31 d ago also GHSA-qjm3-cvp9-3jj3 , EUVD-2026-1165
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 43%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 10 mo ago
Exploit prediction
0.51% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- seclists.org https://seclists.org/fulldisclosure/2026/Jan/7 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 6.8 | 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 |
| CNA | 4.0 | 6.8 | 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 |
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | ome:pom-bio-formats | <=8.3.0 |
no fix listed |
Affected products
- Open Microscopy Environment Bio-Formats
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
References
-
seclists.org
/fulldisclosure/2026/Jan/7
technical-description, exploit, web, mailing-list
-
docs.openmicroscopy.org
/bio-formats/
product, release-notes
-
vulncheck.com
/advisories/bio-formats-memoizer-unsafe-deserialization-via-bfmemo-cache-files
third-party-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2026-22187
advisory
-
docs.openmicroscopy.org
/bio-formats
web
-
github.com
/ome/bioformats
package
Sources
- CVE List CVE-2026-22187
- GitHub Advisory GHSA-qjm3-cvp9-3jj3
- NVD CVE-2026-22187
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