CVE-2019-16645

HIGHNVD 8.68.6—
EchelonGraph scoreMEDIUM confidence

Score 8.6 from GitHub Security Advisory (severity: HIGH) published 2022-05-24. NVD baseline CVSS 8.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
8.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 8%CVSS: 8.6Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.6
EG Score
8.6(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity86% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
8%
EPSS %ILE
95%
KEV
Not listed

Published

September 20, 2019

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated Sep 1, 2026
No patch confirmed yet.
generic

Vulnerabilities/GoAhead Web server HTTP Header Injection at master · Ramikan/Vulnerabilities · GitHub

https://github.com/Ramikan/Vulnerabilities/blob/master/GoAhead%20Web%20server%20HTTP%20Header%20Injection
generic

Locked Out | Packet Storm

http://packetstormsecurity.com/files/154652/GoAhead-2.5.0-Host-Header-Injection.html

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 24× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 131 total refreshes for this CVE.

  1. 2026-09-24 13:59 UTCEPSS rescore
  2. 2026-09-23 13:43 UTCEPSS rescore
  3. 2026-09-22 14:43 UTCEPSS rescore
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  1. 2026-08-24 14:11 UTCEPSS rescore
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  25. 2026-07-23 14:15 UTCEPSS rescore
  26. 2026-07-23 01:41 UTCEG score recompute
  27. 2026-07-22 22:21 UTCEG score recompute
  28. 2026-07-22 14:05 UTCEPSS rescore
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  42. 2026-07-13 22:27 UTCEPSS rescore
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  45. 2026-07-11 08:24 UTCEPSS rescore
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  47. 2026-07-09 19:06 UTCEPSS rescore
  48. 2026-07-08 15:11 UTCEPSS rescore
  49. 2026-07-07 13:43 UTCEPSS rescore
  50. 2026-07-06 02:20 UTCEPSS rescore
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  63. 2026-06-23 21:31 UTCEPSS rescore
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  65. 2026-06-22 14:23 UTCEPSS rescore
  66. 2026-06-21 14:54 UTCEPSS rescore
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  68. 2026-06-21 01:57 UTCEPSS rescore
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  70. 2026-06-19 19:23 UTCEPSS rescore
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  72. 2026-06-18 17:50 UTCEPSS rescore
  73. 2026-06-17 17:50 UTCEPSS rescore
  74. 2026-06-16 17:50 UTCEPSS rescore
  75. 2026-06-15 17:45 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-47439
    First seen Sep 30, 2019

    GoAhead 2.5.0 - Host Header Injection

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2019-16645?
CVE-2019-16645 is a high vulnerability published on September 20, 2019. An issue was discovered in Embedthis GoAhead 2.5.0. Certain pages (such as goform/login and config/logoffpage.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.
When was CVE-2019-16645 disclosed?
CVE-2019-16645 was first published in the National Vulnerability Database on September 20, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-16645 actively exploited?
CVE-2019-16645 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8% probability of exploitation in the next 30 days, which ranks it in the top 5.3% of all scored CVEs.
What is the CVSS score of CVE-2019-16645?
CVE-2019-16645 has a CVSS v3 base score of 8.6 (NVD).
How do I remediate CVE-2019-16645?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-16645, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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