CVE-2018-4056

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 3%CVSS: 9.8Exploit: None knownExposed: 0

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

An exploitable SQL injection vulnerability exists in the administrator web portal function of coTURN prior to version 4.5.0.9. A login message with a specially crafted username can cause an SQL injection, resulting in authentication bypass, which could give access to the TURN server administrator web portal. An attacker can log in via the external interface of the TURN server to trigger this vulnerability.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
50(Track)
EG Risk 50/100SSVC: 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
Severity98% × 45%
Exploitation3% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
3%
EPSS %ILE
86%
KEV
Not listed

Published

February 5, 2019

Last Modified

November 21, 2024

Advisory Details (3)

Auto-updated Aug 19, 2026
🔬 Proof of concept available. Patch available.
generic

[SECURITY] [DSA 4373-1] coturn security update

https://www.debian.org/security/2019/dsa-4373
generic🟡 PoC Available

TALOS-2018-0730 || Cisco Talos Intelligence Group - Comprehensive Threat Intelligence

https://talosintelligence.com/vulnerability_reports/TALOS-2018-0730
generic Patch Available

[SECURITY] [DLA 1671-1] coturn security update

https://lists.debian.org/debian-lts-announce/2019/02/msg00017.html

Affected Packages

(6 across 6 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
coturn—4.5.1.0-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
coturn—4.5.1.0-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
coturn—4.5.1.0-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
coturn—4.5.1.0-1—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
coturn4.2.1.2-14.2.1.2-1+deb8u1—
Debian:9(1)
PackageVulnerable rangeFixed inDependents
coturn4.5.0.5-14.5.0.5-1+deb9u1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 32× 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 121 total refreshes for this CVE.

  1. 2026-08-20 22:51 UTCEPSS rescore
  2. 2026-08-19 17:00 UTCEPSS rescore
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  6. 2026-07-23 01:36 UTCEG score recompute
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  8. 2026-07-22 14:05 UTCEPSS rescore
  9. 2026-07-21 15:22 UTCEPSS rescore
  10. 2026-07-20 23:02 UTCOSV refresh
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  74. 2026-06-06 13:45 UTCEPSS rescore
  75. 2026-06-06 13:45 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2018-4056?
CVE-2018-4056 is a critical vulnerability published on February 5, 2019. An exploitable SQL injection vulnerability exists in the administrator web portal function of coTURN prior to version 4.5.0.9. A login message with a specially crafted username can cause an SQL injection, resulting in authentication bypass, which could give access to the TURN server administrator…
When was CVE-2018-4056 disclosed?
CVE-2018-4056 was first published in the National Vulnerability Database on February 5, 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-2018-4056 actively exploited?
CVE-2018-4056 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3% probability of exploitation in the next 30 days, which ranks it in the top 13.9% of all scored CVEs.
What is the CVSS score of CVE-2018-4056?
CVE-2018-4056 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2018-4056?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-4056, 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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