CVE-2026-13070

Server crash via malformed OCSP response

Published Jul 22, 2026 · Updated Jul 22, 2026

NULL pointer dereference in outbound TLS OCSP validation in MongoDB Server allows attackers to crash the process via a malformed response. During the TLS handshake, OCSP stapling validation fails to reject the malformed response before reaching the null-pointer dereference. The path is enabled by default and requires a peer certificate issued by the cluster's trusted CA or an untrusted network path; the reported consequence is process termination.

CVSS severity6.0
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in outbound TLS OCSP validation in MongoDB Server allows attackers to crash the process via a malformed response. During the TLS handshake, OCSP stapling validation fails to reject the malformed response before reaching the null-pointer dereference. The path is enabled by default and requires a peer certificate issued by the cluster's trusted CA or an untrusted network path; the reported consequence is process termination.

The record

CVE
CVE-2026-13070
Published
Jul 22, 2026
Updated
Jul 22, 2026
Vendor
MongoDB
Product
MongoDB Server
Classifications
CWE-476, T1499.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 22, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.0 <7.0.39
  2. Affected versionversion=8.0 <8.0.28
  3. Affected versionversion=8.2.0 <8.2.12
  4. Affected versionversion=8.3.0 <8.3.7

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

MongoDB · MongoDB Serverversion=7.0 <7.0.39; version=8.0 <8.0.28; version=8.2.0 <8.2.12; version=8.3.0 <8.3.7

Published CVSS scores

6.0MongoDB, Inc.CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.3MongoDB, Inc.CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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