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Changedetection CVE-2026-29039

HIGH
Code Injection (CWE-94)
2026-03-06 security-advisories@github.com GHSA-6fmw-82m7-jq6p
RCE Code Injection Information Disclosure Changedetection
7.5
CVSS 3.1 · GitHub Advisory
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Severity by source

GitHub Advisory PRIMARY
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

4
Analysis Generated
Mar 12, 2026 - 22:06 vuln.today
PoC Detected
Mar 10, 2026 - 19:37 vuln.today
Public exploit code
Patch released
Mar 10, 2026 - 19:37 nvd
Patch available
CVE Published
Mar 06, 2026 - 07:16 nvd
HIGH 7.5

DescriptionGitHub Advisory

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.

AnalysisAI

Arbitrary file read in changedetection.io prior to 0.54.4 allows unauthenticated remote attackers to access sensitive files by injecting malicious XPath expressions into content filters, exploiting the unparsed-text() function in the elementpath library. The application fails to validate or sanitize XPath input, enabling attackers to read any file accessible to the application process. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Access changedetection.io application
Exploit
Submit malicious XPath with unparsed-text() function
Impact
Read arbitrary files from filesystem
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Vulnerability AssessmentAI

Exploitation changedetection.io versions prior to 0.54.4 with ability to specify XPath expressions in include_filters field; default deployment allows unauthenticated remote XPath injection via web interface Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 7.5 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker could exploit this vulnerability to specify XPath expressions as content filters via the include_filters field.
Remediation A vendor patch is available — apply it immediately. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: Identify all changedetection.io instances and document versions in use; disable or restrict access to the include_filters feature if immediate patching is not feasible. …

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CVE-2026-29039 vulnerability details – vuln.today
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