HOMEVULNERABILITIESCVE-2019-17123
HIGH

CVE-2019-17123

CWE-74Published: December 13, 2019· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

The eGain Web Email API 11+ allows spoofed messages because the fromName and message fields (to /system/ws/v11/ss/email) are mishandled, as demonstrated by fromName header injection with a %0a or %0d character. (Also, the message parameter can have initial HTML comment characters.)

NVD Source

Technical Analysis

CVE-2019-17123 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 full integrity compromise (data manipulation), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected Vendors & Products

egain1 product(s)
mail
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

ADVISORYhttp://www.egain.com/products/email-management-software/
ADVISORYhttps://medium.com/maverislabs/cve-2019-17123-cbc946c99f8
ADVISORYhttp://www.egain.com/products/email-management-software/
ADVISORYhttps://medium.com/maverislabs/cve-2019-17123-cbc946c99f8

All References (4)

→
http://www.egain.com/products/email-management-software/Product · Vendor Advisory
→
https://medium.com/maverislabs/cve-2019-17123-cbc946c99f8Exploit · Third Party Advisory
→
http://www.egain.com/products/email-management-software/Product · Vendor Advisory
→
https://medium.com/maverislabs/cve-2019-17123-cbc946c99f8Exploit · Third Party Advisory

Quick Facts

CVE IDCVE-2019-17123
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-74
CISA KEVNo
Affected1 vendor(s)
PublishedDec 13, 2019

Related CVEs (CWE-74)

CVE-2023-30547
10.0
CVE-2026-56699
10.0
CVE-2025-20265
10.0
CVE-2026-44182
10.0
CVE-2026-54159
10.0
CVE-2023-32314
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-17123 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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