CVE-2019-6340

CRITICALNVD 8.19.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-03-25), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.1 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, nvd
Trending — 3 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 92%CVSS: 8.1Exploit: cisa kev · ssvc active · Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed: 0

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

Some field types do not properly sanitize data from non-form sources in Drupal 8.5.x before 8.5.11 and Drupal 8.6.x before 8.6.10. This can lead to arbitrary PHP code execution in some cases. A site is only affected by this if one of the following conditions is met: The site has the Drupal 8 core RESTful Web Services (rest) module enabled and allows PATCH or POST requests, or the site has another web services module enabled, like JSON:API in Drupal 8, or Services or RESTful Web Services in Drupal 7. (Note: The Drupal 7 Services module itself does not require an update at this time, but you should apply other contributed updates associated with this advisory if Services is in use.)

CVSS v3
8.1
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

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
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
92%
EPSS %ILE
100%
KEV
⚠ Exploited

Published

February 21, 2019

Last Modified

November 7, 2025

Advisory Details (6)

Auto-updated Jun 3, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic🟡 PoC Available

Drupal < 8.6.9 - REST Module Remote Code Execution - PHP webapps Exploit

https://www.exploit-db.com/exploits/46459/
generic🟡 PoC Available

Drupal < 8.6.10 / < 8.5.11 - REST Module Remote Code Execution - PHP webapps Exploit

https://www.exploit-db.com/exploits/46452/
generic🔴 Active Exploitation

Drupal core - Highly critical - Remote Code Execution - SA-CORE-2019-003 | Drupal.org

https://www.drupal.org/sa-core-2019-003
generic
http://www.securityfocus.com/bid/107106
generic

Synology_SA_19_09 | Synology Inc.

https://www.synology.com/security/advisory/Synology_SA_19_09
generic🟡 PoC Available

Drupal < 8.5.11 / < 8.6.10 - RESTful Web Services unserialize() Remote Command Execution (Metasploit) - PHP remote Exploit

https://www.exploit-db.com/exploits/46510/

Affected Packages

(2 across 1 ecosystem)
Packagist(2)
PackageVulnerable rangeFixed inDependents
drupal/core8.0.0 ... 8.5.9 (76 versions)8.5.11—
drupal/drupal8.6.0 ... 8.6.9 (10 versions)8.6.10—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 30× 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 111 total refreshes for this CVE.

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

Publicly available exploits

(10 references)

Working exploit code is in the public domain (1 Metasploit module) (6 GitHub PoCs) (3 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCludy-dev/drupal8-REST-RCE
    First seen Aug 31, 2020

    (CVE-2019-6340, CVE-2018-7600) drupal8-REST-RCE

    Open source ↗
  • GitHub PoCjas502n/CVE-2019-6340
    First seen May 27, 2019

    Drupal8's REST RCE, SA-CORE-2019-003, CVE-2019-6340

    Open source ↗
  • Exploit-DBEDB-46510✓ verified
    First seen Mar 7, 2019

    Drupal < 8.5.11 / < 8.6.10 - RESTful Web Services unserialize() Remote Command Execution (Metasploit)

    Open source ↗
  • Exploit-DBEDB-46459
    First seen Feb 25, 2019

    Drupal < 8.6.9 - REST Module Remote Code Execution

    Open source ↗
  • GitHub PoCDevDungeon/CVE-2019-6340-Drupal-8.6.9-REST-Auth-Bypass
    First seen Feb 25, 2019

    CVE-2019-6340 Drupal 8.6.9 REST Auth Bypass examples

    Open source ↗
  • GitHub PoCoways/CVE-2019-6340
    First seen Feb 25, 2019

    CVE-2019-6340 POC Drupal rce

    Open source ↗
  • Exploit-DBEDB-46452
    First seen Feb 23, 2019

    Drupal < 8.6.10 / < 8.5.11 - REST Module Remote Code Execution

    Open source ↗
  • GitHub PoCknqyf263/CVE-2019-6340
    First seen Feb 23, 2019

    Environment for CVE-2019-6340 (Drupal)

    Open source ↗
  • GitHub PoCg0rx/Drupal-SA-CORE-2019-003
    First seen Feb 22, 2019

    CVE-2019-6340-Drupal SA-CORE-2019-003

    Open source ↗
  • Metasploitexploit/unix/webapp/drupal_restws_unserialize✓ verified
    First seen Feb 20, 2019

    Drupal RESTful Web Services unserialize() RCE

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2019-6340?
CVE-2019-6340 is a critical vulnerability published on February 21, 2019. Some field types do not properly sanitize data from non-form sources in Drupal 8.5.x before 8.5.11 and Drupal 8.6.x before 8.6.10. This can lead to arbitrary PHP code execution in some cases. A site is only affected by this if one of the following conditions is met: The site has the Drupal 8 core…
When was CVE-2019-6340 disclosed?
CVE-2019-6340 was first published in the National Vulnerability Database on February 21, 2019, with the most recent update on November 7, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-6340 actively exploited?
Yes. CISA added CVE-2019-6340 to the Known Exploited Vulnerabilities catalog on March 25, 2022, affecting Drupal Core. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2019-6340?
CVE-2019-6340 has a CVSS v3 base score of 8.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2019-6340?
CVE-2019-6340 affects Drupal Core. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2019-6340?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-6340, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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