CVE-2026-25612: high-severity vulnerability in MongoDB Server
Internal ResourceId collision may affect unrelated collections
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.2%
The internal locking mechanism of the MongoDB server uses an internal encoding of the resources in order to choose what lock to take. Collections may inadvertently collide with one another in this representation causing unavailability between them due to conflicting locks.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
MongoDB Inc · MongoDB ServerRelated CVEs — MongoDB Server
In the same product, most dangerous first.
CVE-2026-25611HIGHPre-Authentication Memory Exhaustion Denial of Service in MongoDB ServerEPSS 0.9%CVE-2025-0755HIGHMongoDB C Driver bson library may be susceptible to buffer overflowEPSS 0.8%CVE-2024-8305MEDIUMMongoDB Server secondaries may crash due to forced index constraintsEPSS 0.6%CVE-2024-10921MEDIUMImproper neutralization of null bytes may lead to buffer over-reads in MongoDB ServerEPSS 0.6%CVE-2024-3372HIGHMongoDB Server may have unexpected application behaviour due to invalid BSONEPSS 0.5%CVE-2025-6709HIGHPre-Authentication Denial of Service Vulnerability in MongoDB Server's OIDC AuthenticationEPSS 0.5%