CVE-2026-19478

CRITICALNVD 9.19.4▲
EchelonGraph scoreMEDIUM confidence

Score 9.4 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-17. NVD baseline CVSS 9.1; sources differ by 0.3.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this weekElevated
9.4EG
EchelonGraph verdictMitigate this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 60%
CISA-KEV: Not listedEPSS PROB: 60%CVSS: 9.1Exploit: Elevated riskExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

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.

CVSS v3
9.1
EG Score
9.4CRITICALmedium confidence
EG Risk
81
EG Risk 81/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity94% × 45%
Exploitation60% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
60%
EPSS %ILE
99th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 17, 2026

Last Modified

September 2, 2026

Advisory Details (2)

Auto-updated Sep 15, 2026
No patch confirmed yet.
generic

GitLab Critical Patch Release: 19.2.4, 19.1.6, 19.0.8, 18.11.11 | GitLab Docs

https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-4-released/
generic

GitLab.org / GitLab · GitLab

https://gitlab.com/gitlab-org/gitlab/-/work_items/611377

Vendor Advisories for CVE-2026-19478(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 32× in last 7d / 174× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 316 total refreshes for this CVE.

  1. 2026-10-04 23:21 UTCEPSS rescore
  2. 2026-10-04 21:49 UTCGHSA enrichment
  3. 2026-10-04 16:24 UTCGHSA enrichment
  4. 2026-10-04 11:44 UTCGHSA enrichment
  5. 2026-10-04 07:17 UTCGHSA enrichment
  6. 2026-10-04 03:13 UTCGHSA enrichment
  7. 2026-10-03 22:40 UTCGHSA enrichment
  8. 2026-10-03 17:46 UTCGHSA enrichment
  9. 2026-10-03 00:45 UTCGHSA enrichment
  10. 2026-10-02 19:49 UTCEG score recompute
  11. 2026-10-02 19:49 UTCGHSA enrichment
  12. 2026-10-02 15:45 UTCGHSA enrichment
  13. 2026-10-02 06:56 UTCGHSA enrichment
  14. 2026-10-02 01:33 UTCEG score recompute
  15. 2026-10-02 01:33 UTCGHSA enrichment
  16. 2026-10-01 19:49 UTCEPSS rescore
  17. 2026-10-01 13:57 UTCGHSA enrichment
  18. 2026-10-01 09:53 UTCGHSA enrichment
  19. 2026-10-01 05:48 UTCGHSA enrichment
  20. 2026-10-01 01:30 UTCGHSA enrichment
  21. 2026-09-30 20:52 UTCEG score recompute
  22. 2026-09-30 20:52 UTCGHSA enrichment
  23. 2026-09-30 15:02 UTCEPSS rescore
  24. 2026-09-30 09:58 UTCGHSA enrichment
  25. 2026-09-29 06:29 UTCGHSA enrichment
Show 75 more
  1. 2026-09-29 02:25 UTCGHSA enrichment
  2. 2026-09-28 21:59 UTCEG score recompute
  3. 2026-09-28 21:59 UTCGHSA enrichment
  4. 2026-09-28 14:15 UTCGHSA enrichment
  5. 2026-09-28 10:10 UTCGHSA enrichment
  6. 2026-09-28 06:05 UTCGHSA enrichment
  7. 2026-09-28 02:00 UTCGHSA enrichment
  8. 2026-09-27 21:39 UTCGHSA enrichment
  9. 2026-09-27 16:28 UTCGHSA enrichment
  10. 2026-09-27 12:23 UTCGHSA enrichment
  11. 2026-09-27 08:05 UTCEG score recompute
  12. 2026-09-27 08:05 UTCGHSA enrichment
  13. 2026-09-26 15:58 UTCEPSS rescore
  14. 2026-09-25 10:10 UTCGHSA enrichment
  15. 2026-09-25 06:05 UTCGHSA enrichment
  16. 2026-09-25 02:01 UTCGHSA enrichment
  17. 2026-09-24 17:00 UTCEG score recompute
  18. 2026-09-24 17:00 UTCGHSA enrichment
  19. 2026-09-24 12:48 UTCGHSA enrichment
  20. 2026-09-24 08:42 UTCGHSA enrichment
  21. 2026-09-24 04:38 UTCGHSA enrichment
  22. 2026-09-24 00:32 UTCGHSA enrichment
  23. 2026-09-23 20:27 UTCEG score recompute
  24. 2026-09-23 20:27 UTCGHSA enrichment
  25. 2026-09-23 13:00 UTCGHSA enrichment
  26. 2026-09-23 08:55 UTCGHSA enrichment
  27. 2026-09-23 04:51 UTCGHSA enrichment
  28. 2026-09-23 00:45 UTCGHSA enrichment
  29. 2026-09-22 20:40 UTCGHSA enrichment
  30. 2026-09-22 15:03 UTCEG score recompute
  31. 2026-09-22 15:03 UTCGHSA enrichment
  32. 2026-09-22 10:58 UTCGHSA enrichment
  33. 2026-09-22 06:52 UTCGHSA enrichment
  34. 2026-09-22 02:48 UTCGHSA enrichment
  35. 2026-09-21 22:42 UTCEG score recompute
  36. 2026-09-21 22:42 UTCGHSA enrichment
  37. 2026-09-21 18:38 UTCGHSA enrichment
  38. 2026-09-21 12:20 UTCGHSA enrichment
  39. 2026-09-21 08:15 UTCGHSA enrichment
  40. 2026-09-21 02:51 UTCGHSA enrichment
  41. 2026-09-20 22:45 UTCEG score recompute
  42. 2026-09-20 22:45 UTCGHSA enrichment
  43. 2026-09-20 18:39 UTCGHSA enrichment
  44. 2026-09-20 14:13 UTCGHSA enrichment
  45. 2026-09-20 09:45 UTCGHSA enrichment
  46. 2026-09-20 03:43 UTCGHSA enrichment
  47. 2026-09-19 23:38 UTCGHSA enrichment
  48. 2026-09-19 19:31 UTCEG score recompute
  49. 2026-09-19 19:31 UTCGHSA enrichment
  50. 2026-09-19 15:12 UTCGHSA enrichment
  51. 2026-09-19 11:05 UTCGHSA enrichment
  52. 2026-09-19 07:00 UTCGHSA enrichment
  53. 2026-09-19 02:55 UTCGHSA enrichment
  54. 2026-09-18 22:50 UTCEG score recompute
  55. 2026-09-18 22:50 UTCGHSA enrichment
  56. 2026-09-18 19:27 UTCEPSS rescore
  57. 2026-09-18 18:45 UTCGHSA enrichment
  58. 2026-09-18 14:27 UTCGHSA enrichment
  59. 2026-09-18 10:10 UTCGHSA enrichment
  60. 2026-09-18 06:05 UTCGHSA enrichment
  61. 2026-09-18 01:59 UTCGHSA enrichment
  62. 2026-09-17 21:54 UTCEG score recompute
  63. 2026-09-17 21:54 UTCGHSA enrichment
  64. 2026-09-17 15:59 UTCGHSA enrichment
  65. 2026-09-17 11:54 UTCGHSA enrichment
  66. 2026-09-17 07:49 UTCGHSA enrichment
  67. 2026-09-17 03:44 UTCGHSA enrichment
  68. 2026-09-16 23:05 UTCEG score recompute
  69. 2026-09-16 23:05 UTCGHSA enrichment
  70. 2026-09-16 15:15 UTCEG score recompute
  71. 2026-09-16 15:15 UTCGHSA enrichment
  72. 2026-09-16 14:07 UTCEPSS rescore
  73. 2026-09-16 10:14 UTCEG score recompute
  74. 2026-09-16 10:14 UTCGHSA enrichment
  75. 2026-09-16 05:14 UTCEPSS rescore

Publicly available exploits

(4 references)

Working exploit code is in the public domain (3 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCEQSTLab/CVE-2026-19478
    First seen Aug 27, 2026

    GitLab Code injection

    Open source ↗
  • GitHub PoCdavkharrr/CVE-2026-19478-PoC
    First seen Aug 18, 2026

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

    Open source ↗
  • GitHub PoCdinosn/gitlab-cve-2026-19478-lab
    First seen Aug 18, 2026

    Reproducible A/B lab + safe PoC for GitLab CVE-2026-19478 / CVE-2026-19650 (GraphQL @gl_introduced)

    Open source ↗
  • Nucleihttp/cves/2026/CVE-2026-19478.yaml
    First seen Jan 1, 2026

    GitLab CE/EE - GraphQL @gl_introduced Arbitrary Method Invocation

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19478?
CVE-2026-19478 is a critical vulnerability published on August 17, 2026. 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…
When was CVE-2026-19478 disclosed?
CVE-2026-19478 was first published on August 17, 2026, with the most recent update on September 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19478 actively exploited?
CVE-2026-19478 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 60% probability of exploitation in the next 30 days (99th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-19478?
CVE-2026-19478 has a CVSS v3 base score of 9.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.4 (CRITICAL).
How do I remediate CVE-2026-19478?
No fix for CVE-2026-19478 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-19478 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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