Turms AI-Serving module v0.10.0-SNAPSHOT and earlier contains an image decompression bomb denial of service vulnerability. The ExtendedOpenCVImage class in ai/djl/opencv/ExtendedOpenCVImage.java loads images using OpenCV's imread() function without validating dimensions or pixel count before decompression. An attacker can upload a specially crafted compressed image file (e.g., PNG) that is small when compressed but expands to gigabytes of memory when loaded. This causes immediate memory exhaustion, OutOfMemoryError, and service crash. No authentication is required if the OCR service is publicly accessible. Multiple requests can completely deny service availability.
CVE-2025-66909
Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2025-12-19. NVD baseline CVSS 7.5; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EPSS
- 38.4%
- KEV
- Not listed
Published
December 19, 2025
Last Modified
January 2, 2026
References (4)
- cve@mitrehttps://github.com/Xzzz111/public_cve_report/blob/main/CVE-2025-66909_report.md
- cve@mitrehttps://github.com/turms-im/turms
- cve@mitrehttps://github.com/turms-im/turms/blob/develop/turms-ai-serving/src/main/java/ai/djl/opencv/ExtendedOpenCVImage.java#L37
- 134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/Xzzz111/public_cve_report/blob/main/CVE-2025-66909_report.md
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 44× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
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Frequently asked(5)
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