VulnSocial

CVE-2026-81529Disclosure(mongodb / c\#_driver)

LOWCVSS 7.1 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch mongodb c\#_driver systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Improper neutralization of delimiters in connection-URL construction allows connection-option injection in the MongoDB C# Driver. When an application passes untrusted text into the driver's connection-URL builder and round-trips the builder back into a client configuration, the untrusted text is serialized without neutralizing the URL/option delimiters and is then re-parsed as authoritative connection options. A low-privileged user of such an application can thereby introduce or suppress security-relevant connection settings.

mongodb CVEsBack to dashboard
0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-88

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • c\#_driver

Threat summary

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
mongodb
Products
c\#_driver

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-08-28: 1Patch / Workaround · 2026-08-28: 1Technical Details · 2026-08-28: 108-28
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • Hugo | DevOps | Cybersecurity 🇱🇻@HugoValters
    Disclosure

    CVE-2026-81529 - Connection-option injection in MongoDB C# Driver allows security control bypass. CVSS 7.1. Audit code and sanitize inputs now. #CVE #MongoDB #infosec https://www.valtersit.com/cve/CVE-2026-81529/ #CVE #CVEAlert #infosec #SysAdmin #cybersecurity #Linux #devsecops #devops #developer #sysadmin #100daysofcode #git #github #gitlab #redteam #blueteam #ethicalhacker #ethicalhacking #cybersecurityawareness #cybersecurity #cybersecuritynews #cybersecuritytips #python #hacker #linux #kali #ubuntu #debian #ukraine #spain #ireland #unitedkingdom #canada #finland #estonia #lithuania #ireland #hungary #denmark #norway #malta #mexico #switczerland #china #france #germany #docker

    Post summary

    A new vulnerability (CVE-2026-81529) in the MongoDB C# Driver allowing security control bypass has been disclosed, with a CVSS of 7.1, and mitigation advice to audit and sanitize code.

    0000051
    1.0K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appmongodbc\#_driver-mongodb-

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