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VulnerabilityPublished Updated

CVE-2026-87701: Microsoft Azure Cosmos DB · Injection

Affects Microsoft Azure Cosmos DBSource CVE Database V5

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Not known to be exploited · CVSS 9.6 Critical · patch available : patch Microsoft Azure Cosmos DB as a priority.

Data as of 1 Nov 2026, 11:17 UTC

CVSS 3.1 base score
9.6Critical
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (microsoft)CVSS 3.19.6
EPSS
0.7% chance of exploitation in 30 days – higher than 56% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 17 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 1 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
MicrosoftAzure Cosmos DBAffected
  • =-
Fixed in–

AI-suggested

Microsoft has released an official fix for this vulnerability and manages remediation for Azure Cosmos DB as a cloud service. Users should ensure their Azure Cosmos DB instances are updated per Microsoft's advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-87701. No additional action is required beyond applying the official fix.

Description

Improper neutralization of special elements in output used by a downstream component ('injection') in Azure Cosmos DB allows an authorized attacker to elevate privileges over a network.

References

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