HOMEVULNERABILITIESCVE-2018-17215
HIGH

CVE-2018-17215

CWE-295Published: September 26, 2018· Updated: Jun 17, 2026

8.1
CVSS v3.1

Official Description

An information-disclosure issue was discovered in Postman through 6.3.0. It validates a server's X.509 certificate and presents an error if the certificate is not valid. Unfortunately, the associated HTTPS request data is sent anyway. Only the response is not displayed. Thus, all contained information of the HTTPS request is disclosed to a man-in-the-middle attacker (for example, user credentials).

NVD Source

Technical Analysis

CVE-2018-17215 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.1.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

postman1 product(s)
postman
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://seclists.org/bugtraq/2018/Sep/56
ADVISORYhttps://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2018-016.txt
ADVISORYhttps://seclists.org/bugtraq/2018/Sep/56
ADVISORYhttps://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2018-016.txt

All References (4)

→
https://seclists.org/bugtraq/2018/Sep/56Exploit · Mailing List · Third Party Advisory
→
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2018-016.txtExploit · Third Party Advisory
→
https://seclists.org/bugtraq/2018/Sep/56Exploit · Mailing List · Third Party Advisory
→
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2018-016.txtExploit · Third Party Advisory

Quick Facts

CVE IDCVE-2018-17215
CVSS Score8.1 / 10
SeverityHIGH
WeaknessCWE-295
CISA KEVNo
Affected1 vendor(s)
PublishedSep 26, 2018

Related CVEs (CWE-295)

CVE-2025-68121
10.0
CVE-2026-58162
10.0
CVE-2026-4370
10.0
CVE-2026-59836
9.8
CVE-2024-45159
9.8
CVE-2022-32563
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-17215 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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