CVE-2026-72779

MEDIUMPre-NVD 4.54.5—
EchelonGraph scoreHIGH 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
Trending — 3 sources updated this week
4.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.5Exploit: None knownExposed: 0

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

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
4.5(high)
EG Risk
20(Track)
EG Risk 20/100SSVC: 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
Severity45% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

August 11, 2026

Last Modified

August 11, 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 rangeFixed inDependents
craftcms/cms5.0.0 ... 5.9.9 (178 versions)5.10.6—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 22× in last 7d / 31× 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. 2026-08-20 06:53 UTCEG score recompute
  2. 2026-08-20 06:53 UTCGHSA enrichment
  3. 2026-08-19 17:04 UTCEPSS rescore
  4. 2026-08-19 05:07 UTCEG score recompute
  5. 2026-08-19 05:06 UTCGHSA enrichment
  6. 2026-08-18 13:49 UTCEPSS rescore
  7. 2026-08-18 13:49 UTCEPSS rescore
  8. 2026-08-18 03:15 UTCEG score recompute
  9. 2026-08-18 03:14 UTCGHSA enrichment
  10. 2026-08-17 13:47 UTCEPSS rescore
  11. 2026-08-17 01:26 UTCEG score recompute
  12. 2026-08-17 01:26 UTCGHSA enrichment
  13. 2026-08-16 14:56 UTCEPSS rescore
  14. 2026-08-16 14:56 UTCEPSS rescore
  15. 2026-08-16 02:15 UTCEPSS rescore
  16. 2026-08-15 23:40 UTCEG score recompute
  17. 2026-08-15 23:40 UTCGHSA enrichment
  18. 2026-08-15 01:31 UTCEPSS rescore
  19. 2026-08-14 21:53 UTCEG score recompute
  20. 2026-08-14 21:53 UTCGHSA enrichment
  21. 2026-08-13 22:00 UTCEPSS rescore
  22. 2026-08-13 20:07 UTCGHSA enrichment
  23. 2026-08-12 18:22 UTCEG score recompute
  24. 2026-08-12 18:22 UTCGHSA enrichment
  25. 2026-08-12 13:51 UTCEPSS rescore
Show 6 more
  1. 2026-08-11 16:36 UTCEG score recompute
  2. 2026-08-11 16:36 UTCGHSA enrichment
  3. 2026-08-11 15:21 UTCEG score recompute
  4. 2026-08-11 13:25 UTCEG score recompute
  5. 2026-08-11 12:37 UTCEG score recompute
  6. 2026-08-11 12:37 UTCMITRE cvelistV5first tracked

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 in the National Vulnerability Database on August 11, 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% probability of exploitation in the next 30 days, which ranks it in the top 87.5% of all scored CVEs.
What is the CVSS score of CVE-2026-72779?
CVE-2026-72779 has a CVSS v3 base score of 4.5 (NVD).
How do I remediate CVE-2026-72779?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-72779, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-72779

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