CVE-2018-20346

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 10%CVSS: 8.1Exploit: Elevated riskExposed: 0

A fix is available — apply it.

SQLite before 3.25.3, when the FTS3 extension is enabled, encounters an integer overflow (and resultant buffer overflow) for FTS3 queries that occur after crafted changes to FTS3 shadow tables, allowing remote attackers to execute arbitrary code by leveraging the ability to run arbitrary SQL statements (such as in certain WebSQL use cases), aka Magellan.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
57(Track)
EG Risk 57/100SSVC: 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
Severity81% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
10%
EPSS %ILE
95%
KEV
Not listed

Published

December 21, 2018

Last Modified

November 21, 2024

Advisory Details (7)

Auto-updated Sep 15, 2026
Patch available. Sources: redhat.
generic
https://crbug.com/900910
generic

c368e30ae55600a1c3c9cb1710a54f9c55de786e - chromium/src - Git at Google

https://chromium.googlesource.com/chromium/src/+/c368e30ae55600a1c3c9cb1710a54f9c55de786e
generic

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2018/12/stable-channel-update-for-desktop.html
redhat Patch Available

1659677 – CVE-2018-20346 sqlite: Multiple flaws in sqlite which can be triggered via corrupted internal databases (Magellan) [fedora-all]

https://bugzilla.redhat.com/show_bug.cgi?id=1659677
redhat Patch Available

1659379 – (CVE-2018-20346, CVE-2018-20505, CVE-2018-20506) CVE-2018-20346 CVE-2018-20505 CVE-2018-20506 sqlite: Multiple flaws in sqlite which can be triggered via corrupted internal databases (Magellan)

Affected: Red Hat Enterprise Linux 5, 6 and 7. This flaw in sqlite can be exploited by attackers only if they are able to run arbitrary

https://bugzilla.redhat.com/show_bug.cgi?id=1659379
redhat Patch Available

Multiple remote code execution flaws in sqlite (Magellan) - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 5, 6 and 7.

https://access.redhat.com/articles/3758321
generic

CVE-2018-20346 - PSIRT.COM

http://www.securityfocus.com/bid/106323

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntusqlite3-doc (3.11.0-1ubuntu1.2) @ xenial2026-05-28ubuntu
ubuntulibsqlite3-tcl (3.8.2-1ubuntu2.2+esm1) @ trusty2026-05-28ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(14 across 9 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
chromium—71.0.3578.80-1—
sqlite3—3.25.3-1—
Debian:12(2)
PackageVulnerable rangeFixed inDependents
chromium—71.0.3578.80-1—
sqlite3—3.25.3-1—
Debian:13(2)
PackageVulnerable rangeFixed inDependents
chromium—71.0.3578.80-1—
sqlite3—3.25.3-1—
Debian:14(2)
PackageVulnerable rangeFixed inDependents
chromium—71.0.3578.80-1—
sqlite3—3.25.3-1—
Debian:9(2)
PackageVulnerable rangeFixed inDependents
chromium-browser59.0.3071.104-1 ... 70.0.3538.67-3 (69 versions)71.0.3578.80-1~deb9u1—
sqlite33.16.2-5, 3.16.2-5+deb9u13.16.2-5+deb9u2—
Alpine:v3.6(1)
PackageVulnerable rangeFixed inDependents
sqlite3.10.2-r0 ... 3.9.2-r0 (94 versions)3.25.3-r0—
Alpine:v3.7(1)
PackageVulnerable rangeFixed inDependents
sqlite3.10.2-r0 ... 3.9.2-r0 (97 versions)3.25.3-r0—
Alpine:v3.8(1)
PackageVulnerable rangeFixed inDependents
sqlite3.10.2-r2 ... 3.9.2-r2 (88 versions)3.25.3-r0—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
sqlite33.8.7.1-1, 3.8.7.1-1+deb8u1, 3.8.7.1-1+deb8u23.8.7.1-1+deb8u3—

Weakness Classification(1)

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

All Vendor Advisories

(3)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 5× 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 148 total refreshes for this CVE.

  1. 2026-09-19 15:36 UTCEPSS rescore
  2. 2026-09-18 19:22 UTCEPSS rescore
  3. 2026-09-17 19:22 UTCEPSS rescore
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  10. 2026-09-08 20:04 UTCOSV refresh
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  23. 2026-08-22 04:37 UTCOSV refresh
  24. 2026-08-21 23:45 UTCEPSS rescore
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  1. 2026-08-19 17:00 UTCEPSS rescore
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  11. 2026-08-06 13:42 UTCEPSS rescore
  12. 2026-08-06 08:10 UTCOSV refresh
  13. 2026-08-05 19:13 UTCEPSS rescore
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  26. 2026-07-23 01:35 UTCEG score recompute
  27. 2026-07-22 22:15 UTCEG score recompute
  28. 2026-07-22 14:05 UTCEPSS rescore
  29. 2026-07-21 15:22 UTCEPSS rescore
  30. 2026-07-21 01:17 UTCOSV refresh
  31. 2026-07-20 17:04 UTCEPSS rescore
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  46. 2026-07-09 19:06 UTCEPSS rescore
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  48. 2026-07-07 13:42 UTCEPSS rescore
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  56. 2026-07-03 20:26 UTCOSV refresh
  57. 2026-07-02 16:54 UTCEPSS rescore
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  74. 2026-06-23 21:30 UTCEPSS rescore
  75. 2026-06-22 14:23 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2018-20346?
CVE-2018-20346 is a high vulnerability published on December 21, 2018. SQLite before 3.25.3, when the FTS3 extension is enabled, encounters an integer overflow (and resultant buffer overflow) for FTS3 queries that occur after crafted changes to FTS3 shadow tables, allowing remote attackers to execute arbitrary code by leveraging the ability to run arbitrary SQL…
When was CVE-2018-20346 disclosed?
CVE-2018-20346 was first published in the National Vulnerability Database on December 21, 2018, 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-2018-20346 actively exploited?
CVE-2018-20346 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 10% probability of exploitation in the next 30 days, which ranks it in the top 4.5% of all scored CVEs.
What is the CVSS score of CVE-2018-20346?
CVE-2018-20346 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2018-20346?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-20346, 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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