CVE-2018-18356

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 3%CVSS: 8.8Exploit: None knownExposed: 0

A fix is available — apply it.

An integer overflow in path handling lead to a use after free in Skia in Google Chrome prior to 71.0.3578.80 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: 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
Severity88% × 45%
Exploitation3% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
3%
EPSS %ILE
88%
KEV
Not listed

Published

December 11, 2018

Last Modified

November 21, 2024

Advisory Details (9)

Auto-updated Aug 31, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: redhat.
generic Patch Available

[SECURITY] [DLA 1678-1] thunderbird security update

https://lists.debian.org/debian-lts-announce/2019/02/msg00024.html
generic Patch Available

[SECURITY] [DLA 1677-1] firefox-esr security update

https://lists.debian.org/debian-lts-announce/2019/02/msg00023.html
generic
https://crbug.com/883666
generic

Chrome Releases: Stable Channel Update for Desktop

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

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2019:1144
redhat Patch Available

Affected: Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2019:0374
redhat Patch Available

Affected: Red Hat Enterprise Linux 6.

https://access.redhat.com/errata/RHSA-2019:0373
redhat Patch Available

Affected: Red Hat Enterprise Linux 6 Supplementary.

https://access.redhat.com/errata/RHSA-2018:3803
generic🔴 Active Exploitation

CVE-2018-17480 - PSIRT.COM

http://www.securityfocus.com/bid/106084

Vendor Advisories for CVE-2018-18356(3)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(8)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuxul-ext-lightning (1:60.5.1+build2-0ubuntu0.18.04.1) @ bionic2026-05-28ubuntu
ubuntufirefox-testsuite (65.0.1+build2-0ubuntu0.18.10.1) @ cosmic2026-05-28ubuntu
redhatthunderbird-0:60.6.1-1.el82019-05-13redhat
redhatthunderbird-0:60.6.1-1.el6_102019-03-28redhat
redhatthunderbird-0:60.6.1-1.el7_62019-03-28redhat
redhatfirefox-0:60.5.1-1.el7_62019-02-19redhat
redhatfirefox-0:60.5.1-1.el6_102019-02-19redhat
redhatchromium-browser-0:71.0.3578.80-1.el6_102018-12-10redhat

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

(17 across 6 ecosystems)
Debian:11(3)
PackageVulnerable rangeFixed inDependents
chromium—71.0.3578.80-1—
firefox-esr—60.5.1esr-1—
thunderbird—1:60.5.1-1—
Debian:12(3)
PackageVulnerable rangeFixed inDependents
chromium—71.0.3578.80-1—
firefox-esr—60.5.1esr-1—
thunderbird—1:60.5.1-1—
Debian:13(3)
PackageVulnerable rangeFixed inDependents
chromium—71.0.3578.80-1—
firefox-esr—60.5.1esr-1—
thunderbird—1:60.5.1-1—
Debian:14(3)
PackageVulnerable rangeFixed inDependents
chromium—71.0.3578.80-1—
firefox-esr—60.5.1esr-1—
thunderbird—1:60.5.1-1—
Debian:9(3)
PackageVulnerable rangeFixed inDependents
chromium-browser59.0.3071.104-1 ... 70.0.3538.67-3 (69 versions)71.0.3578.80-1~deb9u1—
firefox-esr45.9.0esr-1 ... 60.5.1esr-1~deb8u1 (88 versions)60.5.1esr-1~deb9u1—
thunderbird1.5-4 ... 1:60.5.1-1~deb8u1 (69 versions)1:60.5.1-1~deb9u1—
Debian:8(2)
PackageVulnerable rangeFixed inDependents
firefox-esr45.0.1esr-1 ... 60.5.0esr-1~deb9u1 (125 versions)60.5.1esr-1~deb8u1—
thunderbird1.5-4 ... 1:60.5.0-3 (68 versions)1:60.5.1-1~deb8u1—

Weakness Classification(3)

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

Additional Vendor Advisories

(5)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

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 151 total refreshes for this CVE.

  1. 2026-09-18 19:22 UTCEPSS rescore
  2. 2026-09-17 19:22 UTCEPSS rescore
  3. 2026-09-16 05:06 UTCEPSS rescore
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  9. 2026-09-08 20:34 UTCOSV refresh
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  22. 2026-08-22 05:37 UTCOSV refresh
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  11. 2026-08-06 13:42 UTCEPSS rescore
  12. 2026-08-06 08:40 UTCOSV refresh
  13. 2026-08-05 19:13 UTCEPSS rescore
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  26. 2026-07-23 01:34 UTCEG score recompute
  27. 2026-07-22 22:14 UTCEG score recompute
  28. 2026-07-22 14:05 UTCEPSS rescore
  29. 2026-07-21 15:22 UTCEPSS rescore
  30. 2026-07-21 01:47 UTCOSV refresh
  31. 2026-07-20 17:04 UTCEPSS rescore
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  48. 2026-07-08 15:11 UTCEPSS rescore
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  57. 2026-07-03 20:56 UTCOSV refresh
  58. 2026-07-02 16:54 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2018-18356?
CVE-2018-18356 is a high vulnerability published on December 11, 2018. An integer overflow in path handling lead to a use after free in Skia in Google Chrome prior to 71.0.3578.80 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
When was CVE-2018-18356 disclosed?
CVE-2018-18356 was first published in the National Vulnerability Database on December 11, 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-2018-18356 actively exploited?
CVE-2018-18356 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 12.1% of all scored CVEs.
What is the CVSS score of CVE-2018-18356?
CVE-2018-18356 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2018-18356?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-18356, 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.

Dependency Blast Radius

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