Is CVE-2026-19478 actively exploited?

Yes. KEV Intelligence tracks CVE-2026-19478 as a known exploited vulnerability. Confidence is high.

What exploitation activity has KEV Intelligence observed?

KEV Intelligence has not yet recorded sensor-observed exploitation attempts for CVE-2026-19478. Our sensors continue to monitor for activity targeting this CVE.

Which versions are affected?

CVE-2026-19478 affects GitLab GitLab. KEV Intelligence lists 4 version rows; examples include 18.2 to < 18.11.11, 19.0 to < 19.0.8, and 19.1 to < 19.1.6.

No. CVE-2026-19478 is not currently listed in CISA KEV.

CVE-2026-19478 Exploited in the Wild — GitLab

Q: How should organizations remediate it?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Q: Is it in CISA KEV?

No. CVE-2026-19478 is not currently listed in CISA KEV.

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-19478 is an unauthenticated vulnerability affecting GitLab GitLab. GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 18.11.11, 19.0 before 19.0.8, 19.1 before 19.1.6, and...

Is it exploited?

Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is high.

Who is affected?

GitLab / GitLab affected before 18.11.11.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

GitLab Code Injection

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 18.11.11, 19.0 before 19.0.8, 19.1 before 19.1.6, and 19.2 before 19.2.4 that under certain conditions could allow an unauthenticated user to remotely modify or delete public projects and user data via a GraphQL directive.

Vendor Product Affected Status

GitLab GitLab Before 18.11.11 Affected

GitLab GitLab Before 19.0.8 Affected

GitLab GitLab Before 19.1.6 Affected

GitLab GitLab Before 19.2.4 Affected

Published: 17 Aug 2026
Exploitation Reported: 21 Aug 2026
Attack vector: Remote
Complexity: Low
Privileges: None
User interaction: None

CVE References

CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2026-19478
HackerOne Bug Bounty Report #3926431 hackerone.com · Exploit https://hackerone.com/reports/3926431
gitlab.com/gitlab-org/gitlab/-/work_items/611377 gitlab.com · CVE Record https://gitlab.com/gitlab-org/gitlab/-/work_items/611377
docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-4... docs.gitlab.com · CVE Record https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-4-...

Exploitation evidence

Why KEV Intelligence marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

TheHackerNews

Recorded 21 Aug 2026

Independent exploitation attestation added to the KEV Intelligence record.

Proof of concept available

CVE

Recorded 17 Aug 2026

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.

Learn about Pro API access

Source	Added
TheHackerNews First	2026-08-21 07:04 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets: 0
User-Agents: 0

Raw values available in Pro and Enterprise.

Scanner coverage

Nuclei template detected 20 Aug 2026.

View Nuclei template

Virtual patch status

No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner	Reference	Detected
Nuclei	https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-19478.yaml	20 Aug 2026

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

9.4 Critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H

EPSS

1.5%

Weaknesses

Improper Control of Generation of Code ('Code Injection') CWE-94

Recent mention · TheHackerNews

GitLab CVE-2026-19478 Comes Under Active Exploitation Within Days of Disclosure

A newly disclosed security flaw in GitLab has come under active exploitation within days of public disclosure, according to watchTowr. The vulnerability in question is CVE-2026-19478 (CVSS score: 9.4), a case of code injection that allows an unauthenticated attacker to modify...

Read full advisory

All Mentions

Recent mention · TheHackerNews

GitLab CVE-2026-19478 Comes Under Active Exploitation Within Days of Disclosure

TheHackerNews · 21 Aug 2026

A newly disclosed security flaw in GitLab has come under active exploitation within days of public disclosure, according to watchTowr. The vulnerability in question is CVE-2026-19478 (CVSS score: 9.4), a case of code injection that allows an unauthenticated attacker to modify or delete publicly accessible GitLab projects and rewrite their data under certain conditions without requiring

Recent mention · Dark Reading

Critical GitLab Zero-Click Flaw Poses Mitigation Challenges

Dark Reading · 18 Aug 2026

A lack of technical details could make it hard for organizations running self-managed GitLab versions to detect potential exploitation of CVE-2026-19478.

Recent mention · TheHackerNews

Critical GitLab GraphQL Flaw Could Let Unauthenticated Attackers Delete Public Projects

TheHackerNews · 17 Aug 2026

GitLab has released security updates to address a critical vulnerability impacting its Community Edition (CE) and Enterprise Edition (EE) software that, under certain conditions, could allow an unauthenticated attacker to remotely modify or delete public projects and user data. The flaw, tracked as CVE-2026-19478, has been rated Critical by GitLab and assigned a CVSS score of 9.4. Released on

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

punitdarji/Gitlab-CVE-2026-19478

github · Created 2026-08-22 12:07:07 UTC · 0 stars · AI assessment 90%

Gitlab-CVE-2026-19478

renzi25031469/CVE-2026-19478

github · Created 2026-08-19 06:24:11 UTC · 0 stars · AI assessment 85%

davkharrr/CVE-2026-19478-PoC

github · Created 2026-08-18 07:14:05 UTC · 0 stars · AI assessment 90%

CVE-2026-19478 PoC . Unauthenticated remote code-injection in GitLab's GraphQL layer

GitLab CE/EE - GraphQL @gl_introduced Arbitrary Method Invocation

nuclei · Created Unknown

HackerOne Bug Bounty Report #3926431

cve · Created Unknown

Timeline

From disclosure to observed exploitation

21 Aug 2026
Added to KEV Intelligence KEV Feed

High-confidence, third-party attested exploitation
20 Aug 2026
Nuclei template available

Scanner coverage available
18 Aug 2026
Added to the KEV Intelligence watchlist

Added to the KEV Intelligence curated list for closer monitoring
17 Aug 2026
Public PoC available

Public proof-of-concept code published
17 Aug 2026
CVE published

Vulnerability disclosed publicly
10 Aug 2026
CVE ID reserved

Identifier reserved by the CNA

Pro API

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Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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Evidence confidence and provenance
First-party sensor telemetry
PoC and scanner references
Affected versions and enrichment
Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2026-19478

Free JSON includes basic KEV fields

{
  "cve_id": "CVE-2026-19478",
  "confidence": "High",
  "cvss_score": 9.4,
  "cvss_estimated": false,
  "epss_score": 0.01506,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

CVE-2026-19478

What security teams need to know first

GitLab Code Injection

Tags

CVE References

Why KEV Intelligence marks this CVE as exploited

Exploited in the wild

Proof of concept available

Known exploited vulnerability sources

Operational artifacts and observed signals

Observed signals

Scanner coverage

Virtual patch status

Scanner Artifacts

Severity, weaknesses, and research context

Weaknesses

GitLab CVE-2026-19478 Comes Under Active Exploitation Within Days of Disclosure

All Mentions

Potential Proof of Concepts

From disclosure to observed exploitation

Added to KEV Intelligence KEV Feed

Nuclei template available

Added to the KEV Intelligence watchlist

Public PoC available

CVE published

CVE ID reserved

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