CVE-2026-107335
MEDIUM 6.5Malcolm's upload-processing pipeline (scripts/safe-extract.py) enforces entry-count, nesting-depth, and total-uncompressed-byte limits when extracting container archives (zip/tar/rar/7z via libarchive), but those limits are not applied when the uploaded file is a single-stream compressed format (.gz, .bz2, .xz, .lzma, .lz) that isn't a .tar.*-style archive. Any authenticated user permitted to upload PCAP/log files can upload a small, highly compressible file (e.g. a gzip bomb) that decompresses to an effectively unbounded size on disk, exhausting the shared Docker volume used by OpenSearch, Logstash, Arkime, and Zeek, and disrupting the platform for all users.
No known exploitation, public exploit, or elevated probability at this time. Track for changes.
Exploitation likelihood
0.5%chance of exploitation in 30 days · 39th percentile
Impact if exploited
6.5CVSS 3.1 · MEDIUM
- ConfidentialityNone
- IntegrityNone
- AvailabilityHigh
What an attacker needs
- ✓Access: Reachable over the network — no local access needed
- ⚠Privileges: Requires a low-privilege account
- ✓User interaction: No user interaction needed
- ✓Complexity: No special conditions — reliably repeatable
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept
No public PoC is currently catalogued.
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Data snapshot:
Weakness (CWE)
- CWE-409: Improper handling of highly compressed data (data amplification)
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References and research data (JSON)
All CVSS metrics
- MEDIUM 6.5 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - MEDIUM 6.5 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References
Exploit-tagged references (not proof of a PoC)
- https://github.com/cisagov/Malcolm/security/advisories/GHSA-jr6p-63pg-hr6g CVE record · CISA-ADP · Updated 2026-10-08T19:05:41.651Z
NVD · CVE-2026-107335 · Updated 2026-10-13T17:17:16.610
Advisories
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-280-01.json CVE record · icscert · Updated 2026-10-14T19:36:54.743Z
NVD · CVE-2026-107335 · Updated 2026-10-13T17:17:16.610 - https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-95122 EUVD · EUVD-2026-95122
Technical & other
- https://github.com/cisagov/Malcolm/security/advisories/GHSA-f2v6-8cj4-mhr6CVE record · icscert · Updated 2026-10-14T19:36:54.743Z
NVD · CVE-2026-107335 · Updated 2026-10-13T17:17:16.610