CVE-2026-9747
CVE-2026-9747 is a medium-severity vulnerability in Mongodb with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-617.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v4: 7.1
- EPSS exploit prediction: 0% (19th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-35863
- Weakness: CWE-617
- Affected product: Mongodb
- Published:
- Last modified:
Description
Adding fromRouter:true and runtimeConstants.userRoles could cause aggregations to crash mongodb server.
Frequently asked questions
- What is CVE-2026-9747?
- Adding fromRouter:true and runtimeConstants.userRoles could cause aggregations to crash mongodb server.
- How severe is CVE-2026-9747?
- CVE-2026-9747 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2026-9747 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-9747?
- CVE-2026-9747 affects Mongodb. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-9747?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-9747 have an EU (EUVD) identifier?
- Yes. CVE-2026-9747 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35863.
- When was CVE-2026-9747 published?
- CVE-2026-9747 was published on 2026-06-09 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*
More vulnerabilities in Mongodb
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- CVE-2026-4148 — High (CVSS 8.8): A use-after-free vulnerability can be triggered in sharded clusters by an authenticated user with the read role who…
- CVE-2024-1351 — High (CVSS 8.8): Under certain configurations of --tlsCAFile and tls.CAFile, MongoDB Server may skip peer certificate validation which…
- CVE-2025-0755 — High (CVSS 8.4): The various bson_append functions in the MongoDB C driver library may be susceptible to buffer overflow when…
Other CWE-617 (Reachable Assertion) vulnerabilities
- CVE-2020-3615 — Critical (CVSS 9.8): Valid deauth/disassoc frames is dropped in case if RMF is enabled and some rouge peer keep on sending rogue…
- CVE-2019-9795 — Critical (CVSS 9.8): A vulnerability where type-confusion in the IonMonkey just-in-time (JIT) compiler could potentially be used by…
- CVE-2026-31739 — High (CVSS 8.8): In the Linux kernel, the following vulnerability has been resolved: crypto: tegra - Add missing CRYPTO_ALG_ASYNC The…
- CVE-2020-12417 — High (CVSS 8.8): Due to confusion about ValueTags on JavaScript Objects, an object may pass through the type barrier, resulting in…
- CVE-2020-6623 — High (CVSS 8.8): stb stb_truetype.h through 1.22 has an assertion failure in stbtt__cff_get_index.
- CVE-2020-6619 — High (CVSS 8.8): stb stb_truetype.h through 1.22 has an assertion failure in stbtt__buf_seek.