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Public proof of conceptFix available

CVE-2019-16645

A public proof of concept exists; no exploitation attested.

  • Published2019-09-20
  • WeaknessCWE-94

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An issue was discovered in Embedthis GoAhead 2.5.0. Certain pages (such as goform/login and config/log_off_page.htm) create links containing a hostname obtained from an arbitrary HTTP Host header sent by an attacker. This could potentially be used in a phishing attack.

Timeline

dates in UTC
  1. 2019-09-30Exploit-DB entryExploit-DB

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-16645?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-16645?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Embedthis goahead
BranchAffectedFixed in
2.5= 2.5.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

Full record on NVD

Fix

  1. Vendor fix CISA ICSA-23-129-02 · 1 productMSM is not intrinsically designed nor intended to be directly connected to the internet. Users should disconnect the device from any internet-facing network.
  2. Vendor fix CISA ICSA-23-129-02 · 1 productHitachi Energy suggests adopting user access management and antivirus protection software equipped with the latest signature rules on hosts with the Manufacturing Message Specification (MMS) Client application installed. Users can implement the operating system user access management functionality,…
  3. Vendor fix CISA ICSA-23-129-02 · 1 productAlso, Hitachi Energy recommends following the hardening guidelines published by “The Center for Internet Security (CIS)” to protect the host operating system of machines connecting with MSM. These guidelines help prevent the lateral movement of the attack vector into MSM via these connected devices…
  4. Vendor fix CISA ICSA-23-129-02 · 1 productCIS Microsoft Windows Desktop Benchmarks (cisecurity.org)
  5. Vendor fix CISA ICSA-23-129-02 · 1 productCIS Microsoft Windows Server Benchmarks (cisecurity.org)
  6. Vendor fix CISA ICSA-23-129-02 · 1 productAccording to Hitachi Energy, users should follow recommended security practices and firewall configurations to help protect a network from outside attacks, including:

Detection

read 2026-11-03 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
EDB-47439
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.18.6read 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • NVDweakness (CWE)CWE-94read 2026-10-23
  • FIRST EPSSEPSS score8.2 %2026-11-03
  • Exploit-DBdetectionread 2026-11-03

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Published
2019-09-20
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2019-16645?

An issue was discovered in Embedthis GoAhead 2.5.0. Certain pages (such as goform/login and config/log_off_page.htm) create links containing a hostname obtained from an arbitrary HTTP Host header sent by an attacker. This could potentially be used in a phishing attack.

Is CVE-2019-16645 actively exploited?

Active exploitation of CVE-2019-16645 has not been confirmed. Its EPSS score was 8.2% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-16645?

CVE-2019-16645 has a CVSS v3 base score of 8.6 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N.

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Sources for this record