---
title: "CVE-2025-66844: Grav may be vulnerable to SSRF attack via Twig Templates"
url: https://erroneo.us/security/cve/CVE-2025-66844/
description: "CVE-2025-66844 (getgrav/grav (Composer (PHP))): In grav Fixes, deadlines and original sources."
type: vulnerability-record
section: "Security Digest"
date_published: 2025-12-15
date_modified: 2025-12-17
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2025-66844"
kev: false
cvss: 9.1
epss: 0.00291
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2025-66844: Grav may be vulnerable to SSRF attack via Twig Templates

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 0.3% , percentile 20: FIRST’s model estimates a 0.3% chance of exploitation activity in the next 30 days, higher than 20% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes getgrav/grav (Composer (PHP)) <= 1.7.49.5, no fixed version listed . Check your lockfile, including transitive dependencies.

## What it is

In grav

## Affected packages

- Composer (PHP) `getgrav/grav` <= 1.7.49.5 → fixed: none listed

## Affected products (CVE record)

- n/a n/a: see advisory

## Severity

- CISA-ADP CVSS 3.1: 9.1 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`
- GitHub CVSS 3.1: 9.1 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.29% probability of exploitation activity in the next 30 days; percentile 20.

## Sources

- [GitHub Advisory GHSA-729w-j79f-2c34](https://github.com/advisories/GHSA-729w-j79f-2c34)
- [CVE.org record CVE-2025-66844](https://www.cve.org/CVERecord?id=CVE-2025-66844)
- [NVD entry CVE-2025-66844](https://nvd.nist.gov/vuln/detail/CVE-2025-66844)
- [github.com](https://github.com/Yohane-Mashiro/grav_cve/issues/2)

---
Source page: https://erroneo.us/security/cve/CVE-2025-66844/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt