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Back to active CVEs
Medium · CVSS 6.9CVE-2026-103276

Ghost before 6.20.0 File Read via URL Encoding Bypass

Answer in brief

CVE-2026-103276 records a Medium severity (CVSS 6.9) vulnerability in Ghost before 6.20.0 File Read via URL Encoding Bypass. The current sources do not mark it as known exploited. The current feed maps TryGhost/Ghost (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 1, 2026Updated Oct 1, 2026Source checked Oct 2, 2026First seen by HOL Oct 1, 2026Material review Oct 1, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.9
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 6.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps TryGhost/Ghost (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
TryGhost/Ghostgeneric>=0 <6.20.06.20.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for TryGhost/Ghost.
  2. 2Review the reported fix. Update TryGhost/Ghost to 6.20.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 1, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 1, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 1, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source description

Ghost versions before 6.20.0 contain a file extension filtering bypass vulnerability that allows unauthenticated attackers to read theme templates and metadata. Attackers can use URL encoding to bypass extension validation and access sensitive theme files.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • WordPress ThemeREX Addons plugin <= 2.46.0 - Server Side Request Forgery (SSRF) vulnerabilitySame generic ecosystem
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  • onetwothreeneth HospitalManagementSystem edit_accounts.php get sql injectionSame generic ecosystem
  • Tenda HG7/HG9/HG10 Boa Web Server formLoopBack boaGetVar stack-based overflowSame generic ecosystem
  • Tenda AC9 POST Request fast_setting_internet_set stack-based overflowSame generic ecosystem
  • SourceCodester Student Result Management System Announcement new_announcement.php cross site scriptingSame generic ecosystem

Record context

Vulnerability class
Arbitrary File Read
EPSS
Not reported
CWE IDs
CWE-173
Source
CVE List V5
Source checked
Oct 2, 2026
References
2 linked sources
Open source record