KodExplorer before 4.55 contains a path traversal vulnerability in the unzip_pre_name() function within app/function/helper.function.php, where a single non-recursive str_replace() sanitization pass can be bypassed using crafted filenames like "....//", combined with PclZip's extract() call in KodArchive.class.php lacking the PCLZIP_OPT_EXTRACT_DIR_RESTRICTION option. Authenticated attackers can upload a malicious ZIP archive with traversal sequences to overwrite arbitrary files such as core JavaScript assets, enabling stored XSS that leads to admin account takeover and subsequent remote code execution via unrestricted PHP file upload.
CVE-2026-104081
HIGHPre-NVD 8.18.1—Trending — 3 sources updated this week
EchelonGraph scoreHIGH confidence
Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-10-09. A secondary CVSS source baseline 8.1; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: ghsa, secondary
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 8.1Exploit: None knownExposed services: Not assessed
A fix is available — apply it.
- CVSS v3
- 8.1
- EG Score
- 8.1HIGHhigh confidence
- EG Risk
- 36EG Risk 36/100CISA 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 computedSeverity81% × 45%Exploitation0% × 40%Automatability0% × 15%CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- —
- EPSS %ILE
- —
- KEV
- Not listed
CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines.
Exploitation none (CISA Vulnrichment) · Automatable no (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
October 9, 2026
Last Modified
October 9, 2026
Advisory Details (2)
Auto-updated Oct 9, 2026Patch available. Sources: github_release.
generic
KodExplorer < 4.55 Path Traversal via unzip_pre_name() ZIP Extraction | Advisories | VulnCheck
https://www.vulncheck.com/advisories/kodexplorer-path-traversal-via-unzip-pre-name-zip-extractiongithub_release Patch Available
4.55 release
Patch available: kalcaddle/KodExplorer 4.55
https://github.com/kalcaddle/KodExplorer/releases/tag/4.55Vendor Advisories for CVE-2026-104081(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 9× 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.
- 2026-10-09 18:34 UTCEG score recompute
- 2026-10-09 18:34 UTCGHSA enrichment
- 2026-10-09 17:35 UTCEG score recompute
- 2026-10-09 17:35 UTCGHSA enrichment
- 2026-10-09 17:13 UTCGHSA enrichment
- 2026-10-09 15:32 UTCEG score recompute
- 2026-10-09 15:32 UTCGHSA enrichment
- 2026-10-09 14:30 UTCEG score recompute
- 2026-10-09 14:28 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(4)
What is CVE-2026-104081?
CVE-2026-104081 is a high vulnerability published on October 9, 2026. KodExplorer before 4.55 contains a path traversal vulnerability in the unzipprename() function within app/function/helper.function.php, where a single non-recursive strreplace() sanitization pass can be bypassed using crafted filenames like "....//", combined with PclZip's extract() call in…
When was CVE-2026-104081 disclosed?
CVE-2026-104081 was first published on October 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-104081?
CVE-2026-104081 has a CVSS base score of 8.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-104081?
A fix for CVE-2026-104081 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-104081 are linked in the Vendor Advisories panel on this page.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-104081
Is Your Infrastructure Affected by CVE-2026-104081?
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