CVE-2026-79988

HIGHPre-NVD 8.78.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 82% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
8.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.7Exploit: None knownExposed: 0

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

The Twig sandbox mechanism in Craft CMS is configured to allow dangerous functionality from the Yii framework, leading to authenticated RCE similar to previously disclosed vulnerabilities.

CVSS v3
8.7
EG Score
8.7(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: Track

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
Severity87% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
18%
KEV
Not listed

Published

August 27, 2026

Last Modified

August 28, 2026

Advisory Details (3)

Auto-updated Aug 27, 2026
Patch available. Sources: github_release.
generic

GitHub - craftcms/cms: Build bespoke content experiences with Craft. · GitHub

https://github.com/craftcms/cms
github_release Patch Available

5.10.7

Patch available: craftcms/cms 5.10.7

https://github.com/craftcms/cms/releases/tag/5.10.7
generic

Authenticated RCE through Twig sandbox escape | Hackrate

https://www.hckrt.com/hacktivity/HCKRT-8RQQ7K

Vendor Advisories for CVE-2026-79988(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 26× in last 7d / 100× 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.

  1. 2026-09-19 20:45 UTCEG score recompute
  2. 2026-09-19 20:45 UTCGHSA enrichment
  3. 2026-09-19 09:08 UTCGHSA enrichment
  4. 2026-09-18 21:29 UTCEG score recompute
  5. 2026-09-18 21:29 UTCGHSA enrichment
  6. 2026-09-18 19:28 UTCEPSS rescore
  7. 2026-09-18 08:31 UTCGHSA enrichment
  8. 2026-09-17 20:54 UTCEG score recompute
  9. 2026-09-17 20:54 UTCGHSA enrichment
  10. 2026-09-17 09:08 UTCGHSA enrichment
  11. 2026-09-16 21:30 UTCEG score recompute
  12. 2026-09-16 21:30 UTCGHSA enrichment
  13. 2026-09-16 14:08 UTCEPSS rescore
  14. 2026-09-16 09:15 UTCEG score recompute
  15. 2026-09-16 09:15 UTCGHSA enrichment
  16. 2026-09-16 05:15 UTCEPSS rescore
  17. 2026-09-15 20:57 UTCGHSA enrichment
  18. 2026-09-15 09:19 UTCEG score recompute
  19. 2026-09-15 09:19 UTCGHSA enrichment
  20. 2026-09-15 03:12 UTCEPSS rescore
  21. 2026-09-15 03:12 UTCEPSS rescore
  22. 2026-09-14 21:42 UTCGHSA enrichment
  23. 2026-09-14 10:04 UTCGHSA enrichment
  24. 2026-09-13 22:03 UTCEG score recompute
  25. 2026-09-13 22:03 UTCGHSA enrichment
Show 75 more
  1. 2026-09-13 10:26 UTCGHSA enrichment
  2. 2026-09-12 22:48 UTCEG score recompute
  3. 2026-09-12 22:48 UTCGHSA enrichment
  4. 2026-09-12 11:10 UTCGHSA enrichment
  5. 2026-09-11 23:29 UTCEG score recompute
  6. 2026-09-11 23:29 UTCGHSA enrichment
  7. 2026-09-11 14:53 UTCEPSS rescore
  8. 2026-09-11 14:53 UTCEPSS rescore
  9. 2026-09-11 11:51 UTCEG score recompute
  10. 2026-09-11 11:51 UTCGHSA enrichment
  11. 2026-09-11 00:01 UTCGHSA enrichment
  12. 2026-09-10 11:52 UTCEG score recompute
  13. 2026-09-10 11:52 UTCGHSA enrichment
  14. 2026-09-09 23:59 UTCGHSA enrichment
  15. 2026-09-09 12:17 UTCGHSA enrichment
  16. 2026-09-09 00:40 UTCEG score recompute
  17. 2026-09-09 00:40 UTCGHSA enrichment
  18. 2026-09-08 22:01 UTCEPSS rescore
  19. 2026-09-08 02:43 UTCEG score recompute
  20. 2026-09-08 02:43 UTCGHSA enrichment
  21. 2026-09-07 15:06 UTCGHSA enrichment
  22. 2026-09-07 02:12 UTCGHSA enrichment
  23. 2026-09-06 14:32 UTCEG score recompute
  24. 2026-09-06 14:32 UTCGHSA enrichment
  25. 2026-09-06 13:48 UTCEPSS rescore
  26. 2026-09-06 02:55 UTCEG score recompute
  27. 2026-09-06 02:55 UTCGHSA enrichment
  28. 2026-09-05 15:18 UTCGHSA enrichment
  29. 2026-09-05 03:38 UTCGHSA enrichment
  30. 2026-09-04 16:00 UTCEG score recompute
  31. 2026-09-04 16:00 UTCGHSA enrichment
  32. 2026-09-04 05:07 UTCEPSS rescore
  33. 2026-09-04 04:21 UTCGHSA enrichment
  34. 2026-09-03 16:43 UTCGHSA enrichment
  35. 2026-09-03 05:05 UTCGHSA enrichment
  36. 2026-09-02 17:17 UTCEG score recompute
  37. 2026-09-02 17:17 UTCGHSA enrichment
  38. 2026-09-02 14:12 UTCEPSS rescore
  39. 2026-09-02 05:39 UTCGHSA enrichment
  40. 2026-09-01 17:59 UTCEG score recompute
  41. 2026-09-01 17:58 UTCGHSA enrichment
  42. 2026-09-01 13:54 UTCEPSS rescore
  43. 2026-09-01 06:17 UTCEG score recompute
  44. 2026-09-01 06:17 UTCGHSA enrichment
  45. 2026-09-01 04:40 UTCEPSS rescore
  46. 2026-09-01 04:40 UTCEPSS rescore
  47. 2026-08-31 18:38 UTCGHSA enrichment
  48. 2026-08-31 06:53 UTCEG score recompute
  49. 2026-08-31 06:53 UTCGHSA enrichment
  50. 2026-08-30 19:18 UTCEPSS rescore
  51. 2026-08-30 19:17 UTCEPSS rescore
  52. 2026-08-30 19:16 UTCGHSA enrichment
  53. 2026-08-30 07:38 UTCEG score recompute
  54. 2026-08-30 07:38 UTCGHSA enrichment
  55. 2026-08-30 01:22 UTCEPSS rescore
  56. 2026-08-29 20:00 UTCGHSA enrichment
  57. 2026-08-29 08:22 UTCEG score recompute
  58. 2026-08-29 08:22 UTCGHSA enrichment
  59. 2026-08-28 21:42 UTCEPSS rescore
  60. 2026-08-28 20:43 UTCEG score recompute
  61. 2026-08-28 20:43 UTCGHSA enrichment
  62. 2026-08-28 19:47 UTCEG score recompute
  63. 2026-08-28 19:47 UTCGHSA enrichment
  64. 2026-08-28 16:13 UTCGHSA enrichment
  65. 2026-08-28 05:26 UTCEG score recompute
  66. 2026-08-28 05:26 UTCGHSA enrichment
  67. 2026-08-28 04:59 UTCEG score recompute
  68. 2026-08-28 04:59 UTCGHSA enrichment
  69. 2026-08-27 20:27 UTCEG score recompute
  70. 2026-08-27 20:27 UTCGHSA enrichment
  71. 2026-08-27 20:17 UTCEG score recompute
  72. 2026-08-27 20:17 UTCGHSA enrichment
  73. 2026-08-27 17:24 UTCEG score recompute
  74. 2026-08-27 16:47 UTCEG score recompute
  75. 2026-08-27 16:43 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-79988?
CVE-2026-79988 is a high vulnerability published on August 27, 2026. The Twig sandbox mechanism in Craft CMS is configured to allow dangerous functionality from the Yii framework, leading to authenticated RCE similar to previously disclosed vulnerabilities.
When was CVE-2026-79988 disclosed?
CVE-2026-79988 was first published in the National Vulnerability Database on August 27, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-79988 actively exploited?
CVE-2026-79988 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 82.0% of all scored CVEs.
What is the CVSS score of CVE-2026-79988?
CVE-2026-79988 has a CVSS v3 base score of 8.7 (NVD).
How do I remediate CVE-2026-79988?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-79988, 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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