CVE-2026-100668

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-26. A secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 6.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Grav 2.0.0 through 2.0.24 contain a Twig content sandbox escape. The array filter (and its identical function form) is on the sandbox allowlist but is registered without the needs_is_sandboxed guard that print_r, vardump, json_encode, yaml_encode and string carry, and its implementation calls toArray() — or falls back to an (array) cast — without consulting the sandbox method allowlist. Because the grav Twig global is the raw Pimple-based dependency injection container, a user who can author Twig in page content can evaluate grav|array to read the container's private $values array, including the un-redacted Config service; a second array cast returns the entire configuration tree, disclosing plugin credentials, SMTP and OAuth secrets, Redis passwords, proxy URLs and the security.* subtree that the sandbox's redaction is meant to hide. Because the payload is stored in page content, the disclosed configuration is rendered to anonymous visitors. Grav 1.7 is not affected as it has no Twig content sandbox. Fixed in Grav 2.0.25.

CVSS v3
6.5
EG Score
6.5MEDIUMhigh confidence
EG Risk
29
EG Risk 29/100CISA 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
Severity65% × 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
0.3%
EPSS %ILE
18th
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

September 26, 2026

Last Modified

September 28, 2026

Advisory Details (2)

Auto-updated Sep 26, 2026
Patch available. Sources: github.
generic

Grav before 2.0.25 Sandbox Escape via array Filter | Advisories | VulnCheck

https://www.vulncheck.com/advisories/grav-before-2.0.25-sandbox-escape-via-array-filter
github Patch Available

Twig content sandbox escape: the `array` filter casts the DI container and exfiltrates the full site configuration · Advisory · getgrav/grav · GitHub

https://github.com/getgrav/grav/security/advisories/GHSA-59qm-58v5-gvc5

Vendor Advisories for CVE-2026-100668(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 21× in last 7d / 24× 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. 2026-10-04 04:03 UTCEG score recompute
  2. 2026-10-04 04:03 UTCGHSA enrichment
  3. 2026-10-03 14:25 UTCEPSS rescore
  4. 2026-10-03 02:03 UTCEG score recompute
  5. 2026-10-03 02:03 UTCGHSA enrichment
  6. 2026-10-02 00:02 UTCEG score recompute
  7. 2026-10-02 00:02 UTCGHSA enrichment
  8. 2026-10-01 19:49 UTCEPSS rescore
  9. 2026-09-30 21:41 UTCEG score recompute
  10. 2026-09-30 21:41 UTCGHSA enrichment
  11. 2026-09-30 15:02 UTCEPSS rescore
  12. 2026-09-29 19:42 UTCEG score recompute
  13. 2026-09-29 19:41 UTCGHSA enrichment
  14. 2026-09-29 15:20 UTCEPSS rescore
  15. 2026-09-28 17:39 UTCEG score recompute
  16. 2026-09-28 17:39 UTCGHSA enrichment
  17. 2026-09-28 16:43 UTCEG score recompute
  18. 2026-09-28 16:43 UTCGHSA enrichment
  19. 2026-09-28 13:50 UTCEPSS rescore
  20. 2026-09-27 16:32 UTCEG score recompute
  21. 2026-09-27 16:32 UTCGHSA enrichment
  22. 2026-09-26 14:33 UTCEG score recompute
  23. 2026-09-26 13:37 UTCEG score recompute
  24. 2026-09-26 13:30 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-100668?
CVE-2026-100668 is a medium vulnerability published on September 26, 2026. Grav 2.0.0 through 2.0.24 contain a Twig content sandbox escape. The array filter (and its identical function form) is on the sandbox allowlist but is registered without the needsissandboxed guard that printr, vardump, jsonencode, yaml_encode and string carry, and its implementation calls toArray()…
When was CVE-2026-100668 disclosed?
CVE-2026-100668 was first published on September 26, 2026, with the most recent update on September 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-100668 actively exploited?
CVE-2026-100668 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (18th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-100668?
CVE-2026-100668 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-100668?
A fix for CVE-2026-100668 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-100668 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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