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CVE-2023-40024

Reflected Cross-Site Scripting (XSS) in scancode.io license endpoint

5.4 MediumFix available

ScanCode.io is a server to script and automate software composition analysis pipelines. In the /license/ endpoint, the detailed view key is not properly validated and sanitized, which can result in a potential cross-site scripting (XSS) vulnerability when attempting to access a detailed license view that does not exist. Attackers can exploit this vulnerability to inject malicious scripts into the response generated by the license_details_view function. When unsuspecting users visit the page, their browsers will execute the injected scripts, leading to unauthorized actions, session hijacking, or stealing sensitive information. This issue has been addressed in release 32.5.2. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
None

Exploit likelihood

0.51%Up 0.5 points since Aug 15, 2023
90%50%10%1%

What each source reports

CVE List Score used 5.4

Reflected Cross-Site Scripting (XSS) in scancode.io license endpoint

ScanCode.io is a server to script and automate software composition analysis pipelines. In the /license/ endpoint, the detailed view key is not properly validated and sanitized, which can result in a potential cross-site scripting (XSS) vulnerability when attempting to access a detailed license view that does not exist. Attackers can exploit this vulnerability to inject malicious scripts into the response generated by the license_details_view function. When unsuspecting users visit the page, their browsers will execute the injected scripts, leading to unauthorized actions, session hijacking, or stealing sensitive information. This issue has been addressed in release 32.5.2. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Record
CVE-2023-40024
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
EUVDEUVD-2023-2227 5.4

ScanCode.io is a server to script and automate software composition analysis pipelines. In the /license/ endpoint, the detailed view key is not properly validated and sanitized, which can result in a potential cross-site scripting (XSS) vulnerability when attempting to access a detailed license view that does not exist. Attackers can exploit this vulnerability to inject malicious scripts into the response generated by the license_details_view function. When unsuspecting users visit the page, their browsers will execute the injected scripts, leading to unauthorized actions, session hijacking, or stealing sensitive information. This issue has been addressed in release 32.5.2. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Record
EUVD-2023-2227
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Updated
2026-11-03
GitHub AdvisoriesGHSA-6xcx-gx7r-rccj 6.1

Scancode.io Reflected Cross-Site Scripting (XSS) in license endpoint

Summary

In the /license/ endpoint, the detailed view key is not properly validated and sanitized, which can result in a potential cross-site scripting (XSS) vulnerability when attempting to access a detailed license view that does not exist.

Details

In the /license/ endpoint, the license_details_view function is vulnerable to a potential cross-site scripting (XSS) attack due to inadequate validation and sanitization of the key parameter. This vulnerability arises when attempting to access a key with malicious javascript.

def license_details_view(request, key):
    """
    Display all available information about a given license `key` followed by
    the full license text.
    """
    licenses = get_licenses()
    try:
        data = saneyaml.dump(licenses[key].to_dict())
        text = licenses[key].text
    except KeyError:
        return HttpResponseNotFound(f"License {key} not found.") # Leads to cross-site scripting when key is malicious javascript
    return HttpResponse(f"<pre>{data}</pre><hr><pre>{text}</pre>")

PoC

  1. Access following endpoint on scancode.io instance: http://localhost/license/%3Cscript%3Ealert(document.cookie);%3C/script%3E/

Impact

Attackers can exploit the vulnerability to inject malicious scripts into the response generated by the license_details_view function. When unsuspecting users visit the page, their browsers will execute the injected scripts, leading to unauthorized actions, session hijacking, or stealing sensitive information.

Record
GHSA-6xcx-gx7r-rccj
CVSS 3.1
6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
NVD 5.4

ScanCode.io is a server to script and automate software composition analysis pipelines. In the /license/ endpoint, the detailed view key is not properly validated and sanitized, which can result in a potential cross-site scripting (XSS) vulnerability when attempting to access a detailed license view that does not exist. Attackers can exploit this vulnerability to inject malicious scripts into the response generated by the license_details_view function. When unsuspecting users visit the page, their browsers will execute the injected scripts, leading to unauthorized actions, session hijacking, or stealing sensitive information. This issue has been addressed in release 32.5.2. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Record
CVE-2023-40024
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
CVSS 3.1
6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSV 5.4

Reflected Cross-Site Scripting (XSS) in scancode.io license endpoint

ScanCode.io is a server to script and automate software composition analysis pipelines. In the /license/ endpoint, the detailed view key is not properly validated and sanitized, which can result in a potential cross-site scripting (XSS) vulnerability when attempting to access a detailed license view that does not exist. Attackers can exploit this vulnerability to inject malicious scripts into the response generated by the license_details_view function. When unsuspecting users visit the page, their browsers will execute the injected scripts, leading to unauthorized actions, session hijacking, or stealing sensitive information. This issue has been addressed in release 32.5.2. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Record
CVE-2023-40024
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSVGHSA-6xcx-gx7r-rccj 6.1

Scancode.io Reflected Cross-Site Scripting (XSS) in license endpoint

Summary

In the /license/ endpoint, the detailed view key is not properly validated and sanitized, which can result in a potential cross-site scripting (XSS) vulnerability when attempting to access a detailed license view that does not exist.

Details

In the /license/ endpoint, the license_details_view function is vulnerable to a potential cross-site scripting (XSS) attack due to inadequate validation and sanitization of the key parameter. This vulnerability arises when attempting to access a key with malicious javascript.

def license_details_view(request, key):
    """
    Display all available information about a given license `key` followed by
    the full license text.
    """
    licenses = get_licenses()
    try:
        data = saneyaml.dump(licenses[key].to_dict())
        text = licenses[key].text
    except KeyError:
        return HttpResponseNotFound(f"License {key} not found.") # Leads to cross-site scripting when key is malicious javascript
    return HttpResponse(f"<pre>{data}</pre><hr><pre>{text}</pre>")

PoC

  1. Access following endpoint on scancode.io instance: http://localhost/license/%3Cscript%3Ealert(document.cookie);%3C/script%3E/

Impact

Attackers can exploit the vulnerability to inject malicious scripts into the response generated by the license_details_view function. When unsuspecting users visit the page, their browsers will execute the injected scripts, leading to unauthorized actions, session hijacking, or stealing sensitive information.

Record
GHSA-6xcx-gx7r-rccj
CVSS 3.1
6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSVPYSEC-2026-1905 6.1

Scancode.io Reflected Cross-Site Scripting (XSS) in license endpoint

Summary

In the /license/ endpoint, the detailed view key is not properly validated and sanitized, which can result in a potential cross-site scripting (XSS) vulnerability when attempting to access a detailed license view that does not exist.

Details

In the /license/ endpoint, the license_details_view function is vulnerable to a potential cross-site scripting (XSS) attack due to inadequate validation and sanitization of the key parameter. This vulnerability arises when attempting to access a key with malicious javascript.

def license_details_view(request, key):
    """
    Display all available information about a given license `key` followed by
    the full license text.
    """
    licenses = get_licenses()
    try:
        data = saneyaml.dump(licenses[key].to_dict())
        text = licenses[key].text
    except KeyError:
        return HttpResponseNotFound(f"License {key} not found.") # Leads to cross-site scripting when key is malicious javascript
    return HttpResponse(f"<pre>{data}</pre><hr><pre>{text}</pre>")

PoC

  1. Access following endpoint on scancode.io instance: http://localhost/license/%3Cscript%3Ealert(document.cookie);%3C/script%3E/

Impact

Attackers can exploit the vulnerability to inject malicious scripts into the response generated by the license_details_view function. When unsuspecting users visit the page, their browsers will execute the injected scripts, leading to unauthorized actions, session hijacking, or stealing sensitive information.

Record
PYSEC-2026-1905
CVSS 3.1
6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
scancodeio
PyPI
through 32.5.1
32.5.2
scancodeio
PyPI
before 32.5.2, plus listed versions
32.0.132.1.032.2.032.4.032.5.032.5.1
32.5.2

History

History
RecordedChangedSources
aliases, publishedEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-40024 is a medium vulnerability (CVSS 5.4) in Nexb Scancode.io, published August 14, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.51%, the 43rd percentile. Fixed in scancodeio 32.5.2.

References

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