CVE-2026-7427Network attack vector

Unauthenticated service interruption via GraphQL JSON parsing

Published Aug 12, 2026 · Updated Aug 12, 2026

Improper input validation in GitLab CE/EE GraphQL API JSON parsing allows remote attackers to interrupt service. GitLab has not disclosed which JSON structure bypasses validation or how the parser allocates resources without limits. The condition is reachable without authentication, and the published impact is limited to reduced service availability rather than data disclosure or modification.

CVSS severity5.3
Medium
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in GitLab CE/EE GraphQL API JSON parsing allows remote attackers to interrupt service. GitLab has not disclosed which JSON structure bypasses validation or how the parser allocates resources without limits. The condition is reachable without authentication, and the published impact is limited to reduced service availability rather than data disclosure or modification.

The record

CVE
CVE-2026-7427
Published
Aug 12, 2026
Updated
Aug 12, 2026
Vendor
GitLab
Product
GitLab
Classifications
CWE-770, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 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=18.5 <19.0.6
  2. Affected versionversion=19.1 <19.1.4
  3. Affected versionversion=19.2 <19.2.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GitLab · GitLabversion=18.5 <19.0.6; version=19.1 <19.1.4; version=19.2 <19.2.2

Published CVSS scores

5.3GitLab Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
7.5NIST NVDCVSS:3.1/AV:N/AC:L/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
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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