From 8aa8bb5f2ca6f3346464373c87abc888203e3330 Mon Sep 17 00:00:00 2001
From: crowdsec-automation
 <63358111+crowdsec-automation@users.noreply.github.com>
Date: Wed, 8 Apr 2026 15:19:27 +0200
Subject: [PATCH 1/4] Add vpatch-CVE-2020-5847 rule

---
 .../crowdsecurity/vpatch-CVE-2020-5847.yaml   | 35 +++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 appsec-rules/crowdsecurity/vpatch-CVE-2020-5847.yaml

diff --git a/appsec-rules/crowdsecurity/vpatch-CVE-2020-5847.yaml b/appsec-rules/crowdsecurity/vpatch-CVE-2020-5847.yaml
new file mode 100644
index 00000000000..a51e895a994
--- /dev/null
+++ b/appsec-rules/crowdsecurity/vpatch-CVE-2020-5847.yaml
@@ -0,0 +1,35 @@
+## autogenerated on 2026-04-08 13:19:24
+name: crowdsecurity/vpatch-CVE-2020-5847
+description: 'Detects UnRaid <=6.80 remote code execution via crafted site[x][text] parameter in green-on.png endpoint.'
+rules:
+  - and:
+      - zones:
+          - URI
+        transform:
+          - lowercase
+          - urldecode
+        match:
+          type: contains
+          value: '/webgui/images/green-on.png'
+      - zones:
+          - ARGS
+        variables:
+          - 'site[x][text]'
+        transform:
+          - lowercase
+          - urldecode
+        match:
+          type: contains
+          value: '<?php'
+
+labels:
+  type: exploit
+  service: http
+  confidence: 3
+  spoofable: 0
+  behavior: 'http:exploit'
+  label: 'UnRaid - RCE'
+  classification:
+    - cve.CVE-2020-5847
+    - attack.T1190
+    - cwe.CWE-94

From aa332f7af96afd5c7e6078c46bd57f3b4c9fddbb Mon Sep 17 00:00:00 2001
From: crowdsec-automation
 <63358111+crowdsec-automation@users.noreply.github.com>
Date: Wed, 8 Apr 2026 15:19:29 +0200
Subject: [PATCH 2/4] Add vpatch-CVE-2020-5847 test config

---
 .appsec-tests/vpatch-CVE-2020-5847/config.yaml | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 .appsec-tests/vpatch-CVE-2020-5847/config.yaml

diff --git a/.appsec-tests/vpatch-CVE-2020-5847/config.yaml b/.appsec-tests/vpatch-CVE-2020-5847/config.yaml
new file mode 100644
index 00000000000..b2219636aa3
--- /dev/null
+++ b/.appsec-tests/vpatch-CVE-2020-5847/config.yaml
@@ -0,0 +1,5 @@
+## autogenerated on 2026-04-08 13:19:24
+appsec-rules:
+  - ./appsec-rules/crowdsecurity/base-config.yaml
+  - ./appsec-rules/crowdsecurity/vpatch-CVE-2020-5847.yaml
+nuclei_template: CVE-2020-5847.yaml

From 65e96091138454465c62a64485e6b1ddfe7d0dda Mon Sep 17 00:00:00 2001
From: crowdsec-automation
 <63358111+crowdsec-automation@users.noreply.github.com>
Date: Wed, 8 Apr 2026 15:19:31 +0200
Subject: [PATCH 3/4] Add CVE-2020-5847.yaml test

---
 .../vpatch-CVE-2020-5847/CVE-2020-5847.yaml     | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 .appsec-tests/vpatch-CVE-2020-5847/CVE-2020-5847.yaml

diff --git a/.appsec-tests/vpatch-CVE-2020-5847/CVE-2020-5847.yaml b/.appsec-tests/vpatch-CVE-2020-5847/CVE-2020-5847.yaml
new file mode 100644
index 00000000000..765a7521948
--- /dev/null
+++ b/.appsec-tests/vpatch-CVE-2020-5847/CVE-2020-5847.yaml
@@ -0,0 +1,17 @@
+## autogenerated on 2026-04-08 13:19:24
+id: CVE-2020-5847
+info:
+  name: CVE-2020-5847
+  author: crowdsec
+  severity: info
+  description: CVE-2020-5847 testing
+  tags: appsec-testing
+http:
+  - method: GET
+    path:
+      - "{{BaseURL}}/webGui/images/green-on.png/?path=x&site[x][text]=%3C?php%20echo%20md5(%22CVE-2020-5847%22);%20?%3E"
+    cookie-reuse: true
+    matchers:
+    - type: status
+      status:
+        - 403

From 8cfc3379feec9b5be9fa1629b25a552ccb662c74 Mon Sep 17 00:00:00 2001
From: crowdsec-automation
 <63358111+crowdsec-automation@users.noreply.github.com>
Date: Wed, 8 Apr 2026 15:19:33 +0200
Subject: [PATCH 4/4] Add vpatch-CVE-2020-5847 rule to vpatch collection

---
 collections/crowdsecurity/appsec-virtual-patching.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/collections/crowdsecurity/appsec-virtual-patching.yaml b/collections/crowdsecurity/appsec-virtual-patching.yaml
index 7ccf9a8bf03..e30a4e213ac 100644
--- a/collections/crowdsecurity/appsec-virtual-patching.yaml
+++ b/collections/crowdsecurity/appsec-virtual-patching.yaml
@@ -65,6 +65,7 @@ appsec-rules:
 - crowdsecurity/vpatch-CVE-2024-29824
 - crowdsecurity/vpatch-CVE-2025-8110
 - crowdsecurity/vpatch-CVE-2024-27348
+- crowdsecurity/vpatch-CVE-2020-5847
 - crowdsecurity/vpatch-CVE-2020-5902
 - crowdsecurity/vpatch-CVE-2018-13379
 - crowdsecurity/vpatch-CVE-2022-26134