CVE-2026-31235 json
imgaug contains an insecure deserialization vulnerability in BackgroundAugmenter class within multicore.py module
published 2026-05-12 5 mo ago modified 2026-10-27 12 d ago also GHSA-g82g-j283-hj97 , PYSEC-2026-356 , EUVD-2026-29558
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 41%
- public exploits
- 0
- none known
Summary
The imgaug library thru 0.4.0 contains an insecure deserialization vulnerability in its BackgroundAugmenter class within the multicore.py module. The class uses Python's pickle module to deserialize data received via a multiprocessing queue in the _augment_images_worker() method without any safety checks. An attacker who can influence the data placed into this queue (e.g., through social engineering, malicious input scripts, or a compromised shared queue) can provide a malicious pickle payload. When deserialized, this payload can execute arbitrary code in the context of the worker process, leading to remote or local code execution depending on the deployment scenario.
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 5 mo ago
Exploit prediction
0.47% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| OSV | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | imgaug | <=0.4.0 |
no fix listed |
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
References
-
github.com
/aleju/imgaug
package
-
notion.so
/CVE-2026-31235-35d1e139318881efb701d814228424a9
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-31235
advisory
-
github.com
/pypa/advisory-database/tree/main/vulns/imgaug/PYSEC-2026-356.yaml
web
-
pypi.org
/project/imgaug
web, package
-
github.com
/advisories/GHSA-g82g-j283-hj97
advisory
Sources
- CVE List CVE-2026-31235
- GitHub Advisory GHSA-g82g-j283-hj97
- NVD CVE-2026-31235
- OSV PYSEC-2026-356
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