Search/CVE-2026-91937
● CVE — High

CVE-2026-91937

DiscoveredSep 15, 2026UpdatedSep 23, 2026

Flowise before 3.1.4 fails to sanitize the overrideConfig.sessionId parameter before using it in MongoDB queries within the MongoDBMemory node. Unauthenticated attackers can submit MongoDB operator objects through the prediction API to read chat history records belonging to other users from the shared collection.

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CVSS v3.1
7.5 HIGH
EPSS
0.47%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Sep 17, 2026 → Sep 25, 2026
▲ 0.19pp
0.28% → 0.47% over 2 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
ConfidentialityHIGH
IntegrityNONE
AvailabilityNONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Connections
1 relationships
Timeline
disclosure → media coverage
Sep 15, 2026
Disclosure — published as a CVE record. · last revised by NVD Sep 23, 2026