{
"document": {
"category": "csaf_base",
"csaf_version": "2.0",
"distribution": {
"tlp": {
"label": "WHITE"
}
},
"lang": "en",
"notes": [
{
"category": "legal_disclaimer",
"text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
}
],
"publisher": {
"category": "coordinator",
"contact_details": "cert@ncsc.nl",
"name": "National Cyber Security Centre",
"namespace": "https://www.ncsc.nl/"
},
"title": "CVE-2026-33140",
"tracking": {
"current_release_date": "2026-03-24T21:25:57.227869Z",
"generator": {
"date": "2026-02-17T15:00:00Z",
"engine": {
"name": "V.E.L.M.A",
"version": "1.7"
}
},
"id": "CVE-2026-33140",
"initial_release_date": "2026-03-18T17:08:15.904829Z",
"revision_history": [
{
"date": "2026-03-18T17:08:15.904829Z",
"number": "1",
"summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)."
},
{
"date": "2026-03-18T17:08:27.995760Z",
"number": "2",
"summary": "NCSC Score created."
},
{
"date": "2026-03-19T11:40:06.446602Z",
"number": "3",
"summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)."
},
{
"date": "2026-03-20T20:25:48.377415Z",
"number": "4",
"summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (1).| CWES updated (1)."
},
{
"date": "2026-03-20T20:25:50.672176Z",
"number": "5",
"summary": "NCSC Score updated."
},
{
"date": "2026-03-20T20:39:12.297836Z",
"number": "6",
"summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (1).| CWES updated (1)."
},
{
"date": "2026-03-20T20:39:17.333011Z",
"number": "7",
"summary": "NCSC Score updated."
},
{
"date": "2026-03-20T21:41:33.485137Z",
"number": "8",
"summary": "References created (1)."
},
{
"date": "2026-03-21T13:47:18.142603Z",
"number": "9",
"summary": "References removed (1)."
},
{
"date": "2026-03-21T15:23:17.474919Z",
"number": "10",
"summary": "Source connected.| CVE status created. (valid)| EPSS created."
},
{
"date": "2026-03-22T00:51:44.256833Z",
"number": "11",
"summary": "References created (1)."
},
{
"date": "2026-03-22T11:24:47.370656Z",
"number": "12",
"summary": "References removed (1)."
},
{
"date": "2026-03-23T00:53:54.039043Z",
"number": "13",
"summary": "References created (1)."
},
{
"date": "2026-03-23T05:15:51.015272Z",
"number": "14",
"summary": "References removed (1)."
},
{
"date": "2026-03-24T20:56:05.669600Z",
"number": "15",
"summary": "Unknown change."
},
{
"date": "2026-03-24T20:56:11.401016Z",
"number": "16",
"summary": "References created (1)."
},
{
"date": "2026-03-24T21:25:50.130432Z",
"number": "17",
"summary": "CVSS created.| Products connected (1).| Product Identifiers created (1).| Exploits created (1)."
},
{
"date": "2026-03-24T21:25:52.276752Z",
"number": "18",
"summary": "NCSC Score updated."
}
],
"status": "interim",
"version": "18"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "vers:unknown/<0.1.7",
"product": {
"name": "vers:unknown/<0.1.7",
"product_id": "CSAFPID-5875873"
}
}
],
"category": "product_name",
"name": "PySpector"
}
],
"category": "vendor",
"name": "ParzivalHack"
},
{
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "vers:unknown/<0.1.7",
"product": {
"name": "vers:unknown/<0.1.7",
"product_id": "CSAFPID-5902894",
"product_identification_helper": {
"cpe": "cpe:2.3:a:parzivalhack:pyspector:*:*:*:*:*:python:*:*"
}
}
}
],
"category": "product_name",
"name": "pyspector"
}
],
"category": "vendor",
"name": "parzivalhack"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2026-33140",
"cwe": {
"id": "CWE-79",
"name": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"
},
"notes": [
{
"category": "description",
"text": "### Summary\nPySpector versions `<= 0.1.6` are affected by a stored Cross-Site Scripting (XSS) vulnerability in the HTML report generator. When PySpector scans a Python file containing JavaScript payloads (i.e. inside a string passed to `eval()` ), the flagged code snippet is interpolated into the HTML report without sanitization. Opening the generated report in a browser causes the embedded JavaScript to execute in the browser's local file context.\n\n### Impact\nAn attacker can craft a malicious Python file (for example, hosted in a public repository), designed to be scanned by PySpector. When a victim scans this file and opens the resulting HTML report, arbitrary JavaScript executes in their browser. While the `file://` context limits the attacker's ability to exfiltrate cookies or make credentialed requests, the following is still achievable:\n- Arbitrary DOM manipulation\n- Redirects to attacker-controlled pages\n- Theft of locally accessible data via `fetch()` or `XMLHttpRequest` to `file://` paths (browser-dependent)\n\nAny user of PySpector who scans untrusted code and generates HTML reports, is potentially affected.\n\n### PoC\n\nThe following steps reproduce the vulnerability on PySpector `<= 0.1.6`:\n1. Create a malicious Python file containing a JavaScript payload embedded in a string argument to `eval()`, and run PySpector against the file, generating an HTML report:\n![\"image\"](\"https://github.com/user-attachments/assets/1b0a57f2-3632-4347-a9b7-6a94dc2e82b2\")
\n2. Open the generated HTML report in any browser:\n![\"image\"](\"https://github.com/user-attachments/assets/a4075c4a-6153-41b4-ad77-81d009d7a9f8\")
",
"title": "github - https://github.com/advisories/GHSA-2gmv-2r3v-jxj2"
},
{
"category": "description",
"text": "### Summary\nPySpector versions `<= 0.1.6` are affected by a stored Cross-Site Scripting (XSS) vulnerability in the HTML report generator. When PySpector scans a Python file containing JavaScript payloads (i.e. inside a string passed to `eval()` ), the flagged code snippet is interpolated into the HTML report without sanitization. Opening the generated report in a browser causes the embedded JavaScript to execute in the browser's local file context.\n\n### Impact\nAn attacker can craft a malicious Python file (for example, hosted in a public repository), designed to be scanned by PySpector. When a victim scans this file and opens the resulting HTML report, arbitrary JavaScript executes in their browser. While the `file://` context limits the attacker's ability to exfiltrate cookies or make credentialed requests, the following is still achievable:\n- Arbitrary DOM manipulation\n- Redirects to attacker-controlled pages\n- Theft of locally accessible data via `fetch()` or `XMLHttpRequest` to `file://` paths (browser-dependent)\n\nAny user of PySpector who scans untrusted code and generates HTML reports, is potentially affected.\n\n### PoC\n\nThe following steps reproduce the vulnerability on PySpector `<= 0.1.6`:\n1. Create a malicious Python file containing a JavaScript payload embedded in a string argument to `eval()`, and run PySpector against the file, generating an HTML report:\n\n2. Open the generated HTML report in any browser:\n",
"title": "github - https://api.github.com/advisories/GHSA-2gmv-2r3v-jxj2"
},
{
"category": "description",
"text": "PySpector is a static analysis security testing (SAST) Framework engineered for modern Python development workflows. PySpector versions 0.1.6 and prior are affected by a stored Cross-Site Scripting (XSS) vulnerability in the HTML report generator. When PySpector scans a Python file containing JavaScript payloads (i.e. inside a string passed to eval() ), the flagged code snippet is interpolated into the HTML report without sanitization. Opening the generated report in a browser causes the embedded JavaScript to execute in the browser's local file context. This issue has been patched in version 0.1.7.",
"title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33140"
},
{
"category": "description",
"text": "PySpector is a static analysis security testing (SAST) Framework engineered for modern Python development workflows. PySpector versions 0.1.6 and prior are affected by a stored Cross-Site Scripting (XSS) vulnerability in the HTML report generator. When PySpector scans a Python file containing JavaScript payloads (i.e. inside a string passed to eval() ), the flagged code snippet is interpolated into the HTML report without sanitization. Opening the generated report in a browser causes the embedded JavaScript to execute in the browser's local file context. This issue has been patched in version 0.1.7.",
"title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33140.json"
},
{
"category": "other",
"text": "0.00047",
"title": "EPSS"
},
{
"category": "other",
"text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N",
"title": "CVSSV4"
},
{
"category": "other",
"text": "5.3",
"title": "CVSSV4 base score"
},
{
"category": "other",
"text": "4.0",
"title": "NCSC Score"
},
{
"category": "other",
"text": "Exploit code publicly available, There is exploit data available from source Nvd",
"title": "NCSC Score top decreasing factors"
}
],
"product_status": {
"known_affected": [
"CSAFPID-5875873",
"CSAFPID-5902894"
]
},
"references": [
{
"category": "external",
"summary": "Source - github",
"url": "https://github.com/advisories/GHSA-2gmv-2r3v-jxj2"
},
{
"category": "external",
"summary": "Source raw - github",
"url": "https://api.github.com/advisories/GHSA-2gmv-2r3v-jxj2"
},
{
"category": "external",
"summary": "Source - github",
"url": "https://api.github.com/advisories/GHSA-2gmv-2r3v-jxj2"
},
{
"category": "external",
"summary": "Source - nvd",
"url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33140"
},
{
"category": "external",
"summary": "Source - cveprojectv5",
"url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33140.json"
},
{
"category": "external",
"summary": "Source - first",
"url": "https://api.first.org/data/v1/epss?limit=10000&offset=0"
},
{
"category": "external",
"summary": "Reference - cveprojectv5; github; nvd",
"url": "https://github.com/ParzivalHack/PySpector/security/advisories/GHSA-2gmv-2r3v-jxj2"
},
{
"category": "external",
"summary": "Reference - github",
"url": "https://github.com/advisories/GHSA-2gmv-2r3v-jxj2"
},
{
"category": "external",
"summary": "Reference - github",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33140"
}
],
"scores": [
{
"cvss_v3": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"baseScore": 6.1,
"baseSeverity": "MEDIUM"
},
"products": [
"CSAFPID-5875873",
"CSAFPID-5902894"
]
}
],
"title": "CVE-2026-33140"
}
]
}