CVE-2026-72779

MEDIUMPre-NVD 4.54.5—
EchelonGraph scoreMEDIUM confidence

Score 4.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-11. A secondary CVSS source baseline 4.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
4.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 4.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Craft CMS 5.0.0-RC1 before 5.10.6 and 4.0.0-RC1 before 4.18.2 contain an arbitrary file read vulnerability. The create() Twig function restricts class instantiation using a 5-entry blocklist that does not include SplFileObject, allowing an authenticated administrator (with allowAdminChanges=true) to configure a malicious entry type title or URI format that instantiates SplFileObject in a non-sandboxed template context. When a user subsequently creates an entry in the affected section, arbitrary files on the server (such as .env containing the security key and database credentials) are read and rendered as entry titles.

CVSS v3
4.5
EG Score
4.5MEDIUMmedium confidence
EG Risk
20
EG Risk 20/100CISA 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
Severity45% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
29th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (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 11, 2026

Last Modified

September 8, 2026

Advisory Details (2)

Auto-updated Aug 11, 2026
Patch available. Sources: github.
generic

Craft CMS 5.0.0-RC1 before 5.10.6 Arbitrary File Read via SplFileObject | Advisories | VulnCheck

https://www.vulncheck.com/advisories/craft-cms-rc1-before-arbitrary-file-read-via-splfileobject
github Patch Available

Arbitrary file read via SplFileObject in non-sandboxed template contexts · Advisory · craftcms/cms · GitHub

https://github.com/craftcms/cms/security/advisories/GHSA-957r-qf9p-67xw

Vendor Advisories for CVE-2026-72779(1)

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

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFix by version rangeDependents
craftcms/cms4.0.0 ... 4.9.7 (252 versions)
  • 5.0.0-RC1 up to 5.10.6: fixed in 5.10.6
  • 4.0.0-RC1 up to 4.18.2: fixed in 4.18.2
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 39× 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 108 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-72779?
CVE-2026-72779 is a medium vulnerability published on August 11, 2026. Craft CMS 5.0.0-RC1 before 5.10.6 and 4.0.0-RC1 before 4.18.2 contain an arbitrary file read vulnerability. The create() Twig function restricts class instantiation using a 5-entry blocklist that does not include SplFileObject, allowing an authenticated administrator (with allowAdminChanges=true)…
When was CVE-2026-72779 disclosed?
CVE-2026-72779 was first published on August 11, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72779 actively exploited?
CVE-2026-72779 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (29th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-72779?
CVE-2026-72779 has a CVSS base score of 4.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-72779?
A fix for CVE-2026-72779 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-72779 are linked in the Vendor Advisories panel on this page.

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