CVE-2023-34251

CRITICALNVD 9.99.9—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.9 under NVD CVSS v3. EPSS exploit probability: 2.6%, top 14% 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, nvd
Elevated
9.9
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 9.9Exploit: NoneExposed: 0

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

Grav is a flat-file content management system. Versions prior to 1.7.42 are vulnerable to server side template injection. Remote code execution is possible by embedding malicious PHP code on the administrator screen by a user with page editing privileges. Version 1.7.42 contains a fix for this issue.

CVSS v3
9.9
EG Score
9.9(medium)
EPSS
81.6%
KEV
Not listed

Published

June 14, 2023

Last Modified

November 21, 2024

Advisory Details (3)

Auto-updated Jul 6, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github.
github Patch Available🟡 PoC Available

Server Side Template Injection (SSTI) · Advisory · getgrav/grav · GitHub

https://github.com/getgrav/grav/security/advisories/GHSA-f9jf-4cp4-4fq5
github_commit Patch Available

commit 9d01140a63c7 (getgrav/grav)

Patch available: getgrav/grav 1.8.0-beta.27 (contains commit 9d01140a63c7)

https://github.com/getgrav/grav/commit/9d01140a63c77075ef09b26ef57cf186138151a5
generic

grav/system/src/Grav/Common/Twig/Extension/GravExtension.php at develop · getgrav/grav · GitHub

https://github.com/getgrav/grav/blob/develop/system/src/Grav/Common/Twig/Extension/GravExtension.php#L174

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFixed inDependents
getgrav/grav0.8.0 ... 1.7.9 (269 versions)1.7.42—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 48× 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. 2026-07-11 08:26 UTCEPSS rescore
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  1. 2026-06-25 13:48 UTCEPSS rescore
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  28. 2026-06-10 05:17 UTCOSV refresh
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  59. 2026-05-24 23:25 UTCEG score recompute
  60. 2026-05-24 16:52 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-34251?
CVE-2023-34251 is a critical vulnerability published on June 14, 2023. Grav is a flat-file content management system. Versions prior to 1.7.42 are vulnerable to server side template injection. Remote code execution is possible by embedding malicious PHP code on the administrator screen by a user with page editing privileges. Version 1.7.42 contains a fix for this…
When was CVE-2023-34251 disclosed?
CVE-2023-34251 was first published in the National Vulnerability Database on June 14, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-34251 actively exploited?
CVE-2023-34251 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 81.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-34251?
CVE-2023-34251 has a CVSS v3 base score of 9.9 (NVD).
How do I remediate CVE-2023-34251?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-34251, 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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