CVE-2026-4358 json
Memory safety issues in slot-based execution hash table spill
published 2026-03-17 7 mo ago modified 2026-09-10 59 d ago also BIT-mongodb-2026-4358 , EUVD-2026-12639
- cvss
- 6.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 30%
- public exploits
- 0
- none known
Summary
A specially crafted aggregation query with $lookup by an authenticated user with write privileges can cause a double-free or use-after-free memory issue in the slot-based execution (SBE) engine when an in-memory hash table is spilled to disk.
Patch / fix
- bitnami mongodb 7.0.31, 8.0.20, 8.2.6
- MongoDB Inc MongoDB Server 7.0.31, 8.0.20, 8.2.6
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 7 mo ago
Exploit prediction
0.36% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- jira.mongodb.org https://jira.mongodb.org/browse/SERVER-118849 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 6.1 | CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 6.4 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H |
| CNA | 4.0 | 6.1 | CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
| OSV | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | mongodb | >=7.0.0, <7.0.31 >=8.0.0, <8.0.20 >=8.2.0, <8.2.6 |
7.0.31 8.0.20 8.2.6 |
Affected products
- MongoDB Inc MongoDB Server
Classification
- Weakness
-
- CWE-415 Double Free
- Technology feeds
References
-
jira.mongodb.org
/browse/SERVER-118849
exploit, vendor-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-4358
web
Sources
- CVE List CVE-2026-4358
- NVD CVE-2026-4358
- OSV BIT-mongodb-2026-4358
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.