VULNpocalypse

CVE-2026-95656: dgtlmoon changedetection.io Preview Endpoint __init__.py add_watch_ui_snapshot server-side request forgery

Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.

Generated by VEDAS. Scores as of 2026-11-01 19:19 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.

What it is

A vulnerability was found in dgtlmoon changedetection.io up to 50389b07. This vulnerability affects the function add_watch_ui_snapshot of the file changedetectionio/blueprint/add_watch_ui/__init__.py of the component Preview Endpoint. Performing a manipulation of the argument url results in server-side request forgery. The attack can be initiated remotely. The exploit has been made public and could be used. Upgrading to version 0.60.1 is able to resolve this issue. The patch is named 71d332d5a0d3da2a0fe89a392413bf4b7d27c84e. The affected component should be upgraded. Was fixed upstream.

Description quoted from the CVE record (assigned by VulDB, published 2026-09-22).

Weakness: Server-Side Request Forgery

How it can be exploited

Exploitable over the network with low attack complexity with no special attack requirements needing no privileges and no user interaction. Impact: confidentiality low, integrity low, availability low. CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

CISA assessment (SSVC): CISA assesses that a public proof of concept exists. Automatable: yes. Technical impact: partial.

Public exploit evidence (Exploit Observer)

Also known as: EUVD-2026-84576, GHSA-xp5x-xjjr-fw2g

VEDAS cluster: VEDAS:DEVILSBANE

Exploit Observer links 5 pieces of public exploit code or detection modules that name this CVE or one of its aliases.

Exploit code and modules (5)

Code that names this CVE. A repository can be a working exploit, a scanner, a fake or malware; read it before running anything.

Vulnerability databases and vendor advisories (3)

Catalogue entries, not exploit evidence.

2 more references returned by Exploit Observer did not name this CVE or an alias, so they are left out.

VEDAS data as of 2026-11-01T17:12 UTC; fetched 2026-11-02.

Live scores

EPSS
0.005
low predicted chance of attack
VEDAS
0.988
strong exploit evidence
On CISA KEV
Not listed
Detection rule
Nuclei · Suricata

Who is affected

ProductAffectedNot affected
dgtlmoon changedetection.ioversion 50389b070.60.1 is not affected

Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.

How to fix it

Vendor guidance:

How to detect it

Nuclei template (active check)

changedetection.io - Server-Side Request Forgery

changedetection.io (up to 50389b07, fixed in 0.60.1) lets the add-watch-ui snapshot/preview endpoint fetch an arbitrary user-supplied url. On instances without a configured password this is reachable unauthenticated, letting a remote attacker make the server request internal resources (SSRF).

Name and description quoted from the template, written by VEDAS.

The template sends 1 request (POST /add-watch-ui/snapshot); it confirms through an out-of-band callback (interactsh), so the scanner must be able to receive it; it decides using word matchers. Severity in the template: high. Marked as not yet verified against a live vulnerable target.

Run it against a host you own or are authorised to test:

bash
nuclei -u https://your-host -t CVE-2026-95656.yaml
Show the template (38 lines)
yaml
id: CVE-2026-95656

info:
  name: "changedetection.io - Server-Side Request Forgery"
  author: vedas-arpsyndicate
  severity: high
  description: |
    changedetection.io (up to 50389b07, fixed in 0.60.1) lets the add-watch-ui snapshot/preview
    endpoint fetch an arbitrary user-supplied url. On instances without a configured password this
    is reachable unauthenticated, letting a remote attacker make the server request internal
    resources (SSRF).
  reference:
    - https://www.exploit.observer/?keyword=CVE-2026-95656&match=exact
    - https://subdomain.center/?engine=ammonites&keyword=changedetection&match=exact
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
    cvss-score: 7.3
    cve-id: CVE-2026-95656
    cwe-id: CWE-918
  metadata:
    verified: false
    max-request: 1
  tags: cve,cve2026,changedetection,ssrf,oast,vuln
http:
  - raw:
      - |
        POST /add-watch-ui/snapshot HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        url=http://{{interactsh-url}}/

    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol
        words:
          - "http"

CVE-2026-95656.yaml on GitHub

Suricata rules (network detection)

1 rule that alert on traffic matching this exploit: VEDAS CVE-2026-95656 changedetection.io - Server-Side Request Forgery. Add them to your Suricata rule set and reload.

Show the rules
suricata
alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"VEDAS CVE-2026-95656 changedetection.io - Server-Side Request Forgery"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/add-watch-ui/snapshot"; nocase; fast_pattern; http.request_body; content:"url="; nocase; content:"://"; classtype:web-application-attack; reference:cve,CVE-2026-95656; reference:url,https://www.exploit.observer/?keyword=CVE-2026-95656&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=changedetection&match=exact; sid:1071602; rev:1;)

CVE-2026-95656.rules on GitHub

References

Vendor advisories and patches

Exploits and technical analysis

Other references

Other databases

Where this comes from

This advisory is generated automatically by VEDAS from: CVE.org record, cve-scores (EPSS and VEDAS), Exploit Observer, vedas-signatures. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.