Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a user with admin panel access and permissions to create or edit pages in Grav CMS can enable Twig processing in the page frontmatter. By injecting malicious Twig expressions, the user can escalate their privileges to admin or execute arbitrary system commands via the scheduler API. This results in both Privilege Escalation (PE) and Remote Code Execution (RCE) vulnerabilities. This vulnerability is fixed in 1.8.0-beta.27.
CVE-2025-66297
This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 0.7%, top 51% 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).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 8.8
- EG Score
- 8.8(medium)
- EG Risk
- 71(Attend)EG Risk 71/100SSVC: Attend
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 computedSeverity88% × 45%Exploitation40% × 40%Automatability100% × 15%Action: Remediate soon — notable exploitation risk. - EPSS PROB
- 1%
- EPSS %ILE
- 49%
- KEV
- Not listed
Published
December 1, 2025
Last Modified
June 17, 2026
Advisory Details (2)
Auto-updated Jul 26, 2026Privilege Escalation and Authenticated Remote Code Execution via Twig Injection · Advisory · getgrav/grav · GitHub
https://github.com/getgrav/grav/security/advisories/GHSA-858q-77wx-hhx6commit e37259527d9c (getgrav/grav)
Patch available: getgrav/grav 2.0.0-beta.3 (contains commit e37259527d9c)
https://github.com/getgrav/grav/commit/e37259527d9c1deb6200f8967197a9fa587c6458Affected Packages
(1 across 1 ecosystem)
Packagist(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| getgrav/grav | 0.8.0 ... 1.8.0-beta.9 (311 versions) | 1.8.0-beta.27 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 12× in last 7d / 47× 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.
- 2026-07-26 14:54 UTCEPSS rescore
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- 2026-07-23 03:01 UTCEG score recompute
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- 2026-06-17 21:05 UTCOSV refresh
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- 2026-05-29 18:39 UTCEG score recompute
- 2026-05-29 13:44 UTCEPSS rescore
Frequently asked(5)
What is CVE-2025-66297?
When was CVE-2025-66297 disclosed?
Is CVE-2025-66297 actively exploited?
What is the CVSS score of CVE-2025-66297?
How do I remediate CVE-2025-66297?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-66297
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