CVE-2026-52873 (GCVE-0-2026-52873)
Vulnerability from cvelistv5 – Published: 2026-08-18 21:28 – Updated: 2026-08-18 21:28
VLAI
EPSS
VEX
Title
Streambert: Global CSP Removal in Wyzie Redeem Window Enables Unconstrained XSS in Electron Renderer
Summary
Streambert is a cross-platform Electron Desktop App to stream and download video content. From version 2.5.0 until version 2.6.0, the wyzie-open-redeem IPC handler in index.js creates the partition:wyzie-redeem Electron session and registers an onHeadersReceived hook that removes the Content-Security-Policy header from every response in that session. The redeem window also lacks a setWindowOpenHandler restriction, so script injection in sub.wyzie.io, a loaded third-party resource, or a site reached through navigation executes without CSP constraints and can affect additional windows and persistent session storage. A user must open the Wyzie API key redemption window, and exploitation requires attacker-controlled script content in a loaded page. The resulting renderer script can invoke renderer-exposed application functionality and can be chained with other vulnerabilities to access internal services or sensitive data. This issue is fixed in version 2.6.0.
Severity
6.9 (Medium)
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/truelockmc/streambert/security… | x_refsource_CONFIRM |
| https://github.com/truelockmc/streambert/pull/126 | x_refsource_MISC |
| https://github.com/truelockmc/streambert/commit/0… | x_refsource_MISC |
| https://github.com/truelockmc/streambert/releases… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| truelockmc | streambert |
Affected:
< 2.6.0
|
guessed |
{
"containers": {
"cna": {
"affected": [
{
"product": "streambert",
"vendor": "truelockmc",
"versions": [
{
"status": "affected",
"version": "\u003c 2.6.0"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Streambert is a cross-platform Electron Desktop App to stream and download video content. From version 2.5.0 until version 2.6.0, the wyzie-open-redeem IPC handler in index.js creates the partition:wyzie-redeem Electron session and registers an onHeadersReceived hook that removes the Content-Security-Policy header from every response in that session. The redeem window also lacks a setWindowOpenHandler restriction, so script injection in sub.wyzie.io, a loaded third-party resource, or a site reached through navigation executes without CSP constraints and can affect additional windows and persistent session storage. A user must open the Wyzie API key redemption window, and exploitation requires attacker-controlled script content in a loaded page. The resulting renderer script can invoke renderer-exposed application functionality and can be chained with other vulnerabilities to access internal services or sensitive data. This issue is fixed in version 2.6.0."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-693",
"description": "CWE-693: Protection Mechanism Failure",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-18T21:28:18.806Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/truelockmc/streambert/security/advisories/GHSA-2j2q-qvpf-wh43",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/truelockmc/streambert/security/advisories/GHSA-2j2q-qvpf-wh43"
},
{
"name": "https://github.com/truelockmc/streambert/pull/126",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/truelockmc/streambert/pull/126"
},
{
"name": "https://github.com/truelockmc/streambert/commit/0bd6b6ca8c830f22f75de1aa2e0d8b9bdf6d34c7",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/truelockmc/streambert/commit/0bd6b6ca8c830f22f75de1aa2e0d8b9bdf6d34c7"
},
{
"name": "https://github.com/truelockmc/streambert/releases/tag/2.6.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/truelockmc/streambert/releases/tag/2.6.0"
}
],
"source": {
"advisory": "GHSA-2j2q-qvpf-wh43",
"discovery": "UNKNOWN"
},
"title": "Streambert: Global CSP Removal in Wyzie Redeem Window Enables Unconstrained XSS in Electron Renderer"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-52873",
"datePublished": "2026-08-18T21:28:18.806Z",
"dateReserved": "2026-06-08T21:44:27.364Z",
"dateUpdated": "2026-08-18T21:28:18.806Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-52873",
"date": "2026-08-19",
"epss": "0.00278",
"percentile": "0.20399"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-52873\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-08-18T22:16:53.830\",\"lastModified\":\"2026-08-18T22:16:53.830\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Streambert is a cross-platform Electron Desktop App to stream and download video content. From version 2.5.0 until version 2.6.0, the wyzie-open-redeem IPC handler in index.js creates the partition:wyzie-redeem Electron session and registers an onHeadersReceived hook that removes the Content-Security-Policy header from every response in that session. The redeem window also lacks a setWindowOpenHandler restriction, so script injection in sub.wyzie.io, a loaded third-party resource, or a site reached through navigation executes without CSP constraints and can affect additional windows and persistent session storage. A user must open the Wyzie API key redemption window, and exploitation requires attacker-controlled script content in a loaded page. The resulting renderer script can invoke renderer-exposed application functionality and can be chained with other vulnerabilities to access internal services or sensitive data. This issue is fixed in version 2.6.0.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"truelockmc\",\"product\":\"streambert\",\"versions\":[{\"version\":\"\u003c 2.6.0\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N\",\"baseScore\":6.9,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.6,\"impactScore\":4.7}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-79\"},{\"lang\":\"en\",\"value\":\"CWE-693\"}]}],\"references\":[{\"url\":\"https://github.com/truelockmc/streambert/commit/0bd6b6ca8c830f22f75de1aa2e0d8b9bdf6d34c7\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/truelockmc/streambert/pull/126\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/truelockmc/streambert/releases/tag/2.6.0\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/truelockmc/streambert/security/advisories/GHSA-2j2q-qvpf-wh43\",\"source\":\"security-advisories@github.com\"}]}}"
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
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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.
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.
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