How severe is GHSA-v7cp-2cx9-x793?

GHSA-v7cp-2cx9-x793 has a CVSS score of 7.5/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by GHSA-v7cp-2cx9-x793?

GHSA-v7cp-2cx9-x793 affects the following packages: changedetection-io (PyPI). Ecosystems affected: PyPI.

How do I fix GHSA-v7cp-2cx9-x793?

No patched version of changedetection-io has shipped for GHSA-v7cp-2cx9-x793 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.

How do I detect GHSA-v7cp-2cx9-x793 in my PyPI dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for changedetection-io. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

How do I mitigate GHSA-v7cp-2cx9-x793 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

How does O3 Security protect against GHSA-v7cp-2cx9-x793?

O3 pinpoints whether GHSA-v7cp-2cx9-x793 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Is GHSA-v7cp-2cx9-x793 actively exploited in the wild?

No public exploit code has been indexed for GHSA-v7cp-2cx9-x793 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

When was GHSA-v7cp-2cx9-x793 published, and has it been updated?

GHSA-v7cp-2cx9-x793 was published on May 4, 2026 and was last updated on June 5, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐍 PyPI

GHSA-v7cp-2cx9-x793

HIGH

GHSA-v7cp-2cx9-x793 is a high-severity (CVSS 7.5) vulnerability in changedetection-io. O3 Security confirms whether GHSA-v7cp-2cx9-x793 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

changedetection.io project has an XXE vulnerability

Also known asCVE-2026-41895PYSEC-2026-29

Published

May 4, 2026

Updated

Jun 5, 2026

Affected

1 pkg

Patched

None yet

Exploits

None indexed

Real-World Exposure

1 pkg affected

🐍changedetection-io

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.

Description

changedetection.io_XXE_01 Vulnerability Report: We discovered a XXE vulnerability in the changedetection.io project

While analyzing the code logic, it was determined that an area may lead to unintended behavior under specific conditions. With the project's security in mind, see the analysis results to discern whether this may indicate a potential security risk.

Overview

SOURCE_VERSION: 0.54.9 (9f3a9fdc18bba404244801e5df8109e213ce9ff4)
Vulnerability type: XXE
Finding title: XML XPath helpers parse untrusted XML with entity resolution left to lxml defaults
Affected location: changedetectionio/html_tools.py:287

Root Cause

xpath_filter() switches to XML mode for XML/RSS content and creates etree.XMLParser(strip_cdata=False) without explicitly disabling external entity resolution, external DTD loading, or network-backed entity lookup. The helper then parses untrusted XML bytes directly with etree.fromstring(...).

Source-to-Sink Chain

Untrusted XML/RSS response content is fetched from monitored URLs.
Stream detection marks the content as XML/RSS and the include-filter path invokes xpath_filter(..., is_xml=True).
xpath_filter() builds the default XML parser and calls etree.fromstring(...) at changedetectionio/html_tools.py:287.
External entity declarations in attacker XML can be expanded by parser-default behavior in affected runtime combinations.

Exploitation Preconditions

Attacker controls the watched XML/RSS response body.
The watch uses an XPath include filter that triggers XML helper parsing.
Runtime parser behavior allows external entity expansion (for example, vulnerable dependency/default combinations).
The process can read the referenced local resource.

Risk

The XML helper path can turn watch processing into a local file disclosure primitive when entity expansion is enabled by parser defaults.

Impact

Sensitive local files can be exposed into extracted watch output, diff history, and downstream notification channels.

Remediation

Harden XML parser construction with resolve_entities=False, load_dtd=False, and no_network=True.
Reject DOCTYPE/entity declarations for untrusted XML if DTD features are unnecessary.
Add regression tests that assert external entities are never expanded in XPath XML helper flows.

Affected Packages

1 total

Ecosystem	Package	Vulnerable range	Fix
🐍PyPI	`changedetection-io`	all versions	No fix

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for changedetection-io. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Remediation status
No patched version of changedetection-io has shipped for GHSA-v7cp-2cx9-x793 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-v7cp-2cx9-x793 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-v7cp-2cx9-x793. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

# changedetection.io_XXE_01 Vulnerability Report: We discovered a XXE vulnerability in the changedetection.io project While analyzing the code logic, it was determined that an area may lead to unintended behavior under specific conditions. With the project's security in mind, see the analysis results to discern whether this may indicate a potential security risk. ## Overview - SOURCE_VERSION: `0.54.9 (9f3a9fdc18bba404244801e5df8109e213ce9ff4)` - Vulnerability type: `XXE` - Finding title: `XML XPath helpers parse untrusted XML with entity resolution left to lxml defaults` - Affected location:

O3 Security · Impact-Aware SCA

Is GHSA-v7cp-2cx9-x793 in your dependencies?

O3 detects GHSA-v7cp-2cx9-x793 across PyPI dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

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