How severe is CVE-2026-82056?

CVE-2026-82056 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-82056 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-82056?

CVE-2026-82056 affects Mongodb. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-82056?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2026-82056 published?

CVE-2026-82056 was published on 2026-09-08 and last updated on 2026-09-16.

CVE-2026-82056

CVE-2026-82056 is a medium-severity vulnerability in Mongodb with a CVSS 3.x base score of 5.3. 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-416.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v4: 6.0
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-416
Affected product: Mongodb
Published: 2026-09-08
Last modified: 2026-09-16

Description

A race condition in MongoDB server's text index query parsing can cause a heap use-after-free read when handling upsert retry paths. Under certain concurrent index lifecycle operations, a raw pointer to internal text index metadata may be dereferenced after the underlying structures have been freed, leading to a server crash. An authenticated user with readWrite privileges can trigger this condition through specific concurrent text-search and index management operations, resulting in denial of service for all connected clients. This

Frequently asked questions

What is CVE-2026-82056?: A race condition in MongoDB server's text index query parsing can cause a heap use-after-free read when handling upsert retry paths. Under certain concurrent index lifecycle operations, a raw pointer to internal text index metadata may be dereferenced after the underlying structures have been freed, leading to a server crash. An authenticated user with readWrite privileges can trigger this condition through specific concurrent text-search and index management operations, resulting in denial of service for all connected clients. This
How severe is CVE-2026-82056?: CVE-2026-82056 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-82056 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-82056?: CVE-2026-82056 affects Mongodb. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-82056?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-82056 published?: CVE-2026-82056 was published on 2026-09-08 and last updated on 2026-09-16.

References

https://jira.mongodb.org/browse/SERVER-130306

Affected products (1)

cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:*

More vulnerabilities in Mongodb

CVE-2017-15535 — Critical (CVSS 9.1): MongoDB 3.4.x before 3.4.10, and 3.5.x-development, has a disabled-by-default configuration setting,…
CVE-2026-18692 — High (CVSS 8.8): An issue in MongoDB Server's handling of timeseries bucket lifecycle could allow an authenticated user with write…
CVE-2026-18691 — High (CVSS 8.8): An issue in MongoDB Server's intra-cluster connection setup could allow a party with suitable network access to…
CVE-2026-11933 — High (CVSS 8.8): A use-after-free vulnerability exists in MongoDB Server's server-side JavaScript engine when converting BSON documents…
CVE-2026-8053 — High (CVSS 8.8): An issue in MongoDB Server's time-series collection implementation allows an authenticated user with database write…
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…

All CVEs affecting Mongodb →

Other CWE-416 (Use After Free) vulnerabilities

CVE-2026-63795 — Critical (CVSS 10.0): In the Linux kernel, the following vulnerability has been resolved: 9p: avoid putting oldfid in p9_client_walk() error…
CVE-2026-13782 — Critical (CVSS 10.0): Use after free in Browser in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the…
CVE-2026-4725 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149…
CVE-2026-4688 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox…
CVE-2025-24085 — Critical (CVSS 10.0): A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.3 and iPadOS 18.3,…
CVE-2024-43102 — Critical (CVSS 10.0): Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of…

Browse all CWE-416 (Use After Free) vulnerabilities →

Threat intelligence

Threat-intel indicators referencing this CVE:

138.197.130.35 (ipv4-addr)
18.228.228.159 (ipv4-addr)
3.19.213.118 (ipv4-addr)