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Back to active CVEs
Medium · CVSS 6.5CVE-2026-102139

Kiteworks Email Protection Gateway Incorrect Authorization

Answer in brief

CVE-2026-102139 records a Medium severity (CVSS 6.5) vulnerability in Kiteworks Email Protection Gateway Incorrect Authorization. The current sources do not mark it as known exploited. The current feed maps Kiteworks/Email Protection Gateway (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 Sep 30, 2026Updated Oct 1, 2026Source checked Oct 1, 2026First seen by HOL Sep 30, 2026Material review Oct 1, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.5
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 6.5. 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 Kiteworks/Email Protection Gateway (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Kiteworks/Email Protection Gatewaygeneric>=0 <9.5.19.5.1

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Kiteworks/Email Protection Gateway.
  2. 2Review the reported fix. Update Kiteworks/Email Protection Gateway to 9.5.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 30, 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

    Sep 30, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referenceraw.githubusercontent.com
Upstream source description

An authorization check in the large file exchange feature of Kiteworks Email Protection Gateway did not correctly establish that the requesting user was a party to the package being requested. An authenticated user of that optional feature could read the subject, message body, and attachments of packages they neither sent nor received.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • RT-Labs AB C-Open CANopen SDO Server Write Protection BypassAlso CWE-863
  • Wormhole.app SSRFSame generic ecosystem
  • Physical UART Access Leading to an Unauthenticated Root Shell in TP-Link Kasa EC70 and EC71Same generic ecosystem
  • Out-of-bounds write in PeaZip PEA extractor allows code execution via a crafted .pea archiveSame generic ecosystem
  • Cadmos LTI exposure of sensitive information via debug modeSame generic ecosystem
  • Joyland AI hard-coded credentials for push notificationsSame generic ecosystem

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-639, CWE-863
Source
CVE List V5
Source checked
Oct 1, 2026
References
2 linked sources
Open source record