CVE-2026-1660

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-04-22. NVD baseline CVSS 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
6.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.5Exploit: NoneExposed: 0

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

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 12.3 before 18.9.6, 18.10 before 18.10.4, and 18.11 before 18.11.1 that under certain conditions could have allowed an authenticated user to cause denial of service when importing issues due to improper input validation.

CVSS v3
6.5
EG Score
6.5(medium)
EPSS
32.2%
KEV
Not listed

Published

April 22, 2026

Last Modified

April 23, 2026

Advisory Details (2)

Auto-updated Jun 14, 2026
No patch confirmed yet.
generic

GitLab.org / GitLab · GitLab

https://gitlab.com/gitlab-org/gitlab/-/work_items/588200
generic

GitLab Patch Release: 18.11.1, 18.10.4, 18.9.6 | GitLab Docs

https://about.gitlab.com/releases/2026/04/22/patch-release-gitlab-18-11-1-released/

Vendor Advisories for CVE-2026-1660(1)

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 8× in last 7d / 48× 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 103 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-1660?
CVE-2026-1660 is a medium vulnerability published on April 22, 2026. GitLab has remediated an issue in GitLab CE/EE affecting all versions from 12.3 before 18.9.6, 18.10 before 18.10.4, and 18.11 before 18.11.1 that under certain conditions could have allowed an authenticated user to cause denial of service when importing issues due to improper input validation.
When was CVE-2026-1660 disclosed?
CVE-2026-1660 was first published in the National Vulnerability Database on April 22, 2026, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-1660 actively exploited?
CVE-2026-1660 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 32.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-1660?
CVE-2026-1660 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-1660?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-1660, 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.

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