CVE-2026-52875

HIGHPre-NVD 8.48.4—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (5th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
8.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 8.4Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Streambert is a cross-platform Electron Desktop App to stream and download video content. Prior to 2.6.0, the perform-scheduled-backup IPC handler in src/ipc/storage.js takes settings.path from a renderer-supplied object and uses the resulting directory for fs.mkdirSync, fs.writeFileSync, fs.readdirSync, and fs.unlinkSync operations without checking that it is inside an authorized backup location. A compromised renderer can choose an absolute path or a relative traversal path to create directories and write a streambert-backup-[timestamp].json file containing renderer-controlled data. The pruning loop can also delete files in that directory whose names begin with streambert-backup- and end with .json. This vulnerability is fixed in 2.6.0.

CVSS v3
8.4
EG Score
8.4HIGHmedium confidence
EG Risk
69
EG Risk 69/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity84% × 45%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.2%
EPSS %ILE
5th
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 18, 2026

Last Modified

September 9, 2026

Advisory Details (3)

Auto-updated Aug 18, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_pr, github_commit.
github_commit Patch Available

commit 43566ed03118 (truelockmc/streambert)

Patch available: truelockmc/streambert 2.6.0 (contains commit 43566ed03118)

http://github.com/truelockmc/streambert/commit/43566ed031183b046675761c9813c5379b619269
github_pr Patch Available

Fixed multiple security issues

Patch available: truelockmc/streambert 2.6.0 (PR #149 merged 2026-06-27)

https://github.com/truelockmc/streambert/pull/149
githubMentions a patch (unverified)🟡 PoC Available

Arbitrary Directory Creation and File Manipulation via Backup Handler · Advisory · truelockmc/streambert · GitHub

https://github.com/truelockmc/streambert/security/advisories/GHSA-c64m-cx97-6rc9

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 49× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-09 20:07 UTCEPSS rescore
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  1. 2026-09-26 15:59 UTCEPSS rescore
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  48. 2026-08-27 14:25 UTCEPSS rescore
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  60. 2026-08-21 23:49 UTCEPSS rescore
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  62. 2026-08-20 22:55 UTCEPSS rescore
  63. 2026-08-19 22:15 UTCEG score recompute
  64. 2026-08-19 17:04 UTCEPSS rescore
  65. 2026-08-18 22:23 UTCEG score recompute
  66. 2026-08-18 21:38 UTCEG score recompute
  67. 2026-08-18 21:38 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-52875?
CVE-2026-52875 is a high vulnerability published on August 18, 2026. Streambert is a cross-platform Electron Desktop App to stream and download video content. Prior to 2.6.0, the perform-scheduled-backup IPC handler in src/ipc/storage.js takes settings.path from a renderer-supplied object and uses the resulting directory for fs.mkdirSync, fs.writeFileSync,…
When was CVE-2026-52875 disclosed?
CVE-2026-52875 was first published on August 18, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-52875 actively exploited?
CVE-2026-52875 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-52875?
CVE-2026-52875 has a CVSS base score of 8.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-52875?
A fix for CVE-2026-52875 is available: update to the fixed version the vendor names in its advisory.

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