CVE-2019-5786: Google Chrome Blink Use-After-Free Vulnerability

Patch now

MEDIUM 6.5EXPLOITEDUPGRADE

CVE-2019-5786 is a medium-severity flaw (CVSS 6.5) affecting chrome, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Object lifetime issue in Blink in Google Chrome prior to 72.0.3626.121 allowed a remote attacker to potentially perform out of bounds memory access via a crafted HTML page.

Why this priority

EPSS top 1%: very likely to be exploited
Exploited in the wild (CISA KEV)
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	61.1% (top 1%)
CISA exploited list	Yes, fix due 2022-06-13
Weakness	CWE-416
Published	2019-06-27
Last modified	2026-06-17

Publisher (CNA): Chrome · Vendor: google

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-06-27 17:15 UTCPublished CVE record published
2022-05-23Exploited Added to the CISA Known Exploited Vulnerabilities list
2022-06-13Deadline CISA due date for US federal agencies to patch
2026-06-17 02:38 UTCUpdated Record last modified

google chrome UPGRADE

Affected: < 72.0.3626.121

Fixed in: 72.0.3626.121

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy chrome || rpm -q chrome || chrome --version

2. UPGRADE to 72.0.3626.121 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade chrome

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade chrome

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

npm · puppeteer · FIXED · 1.13.0 · vulnerable: < 1.13.0 · source

npm install puppeteer@">=1.13.0" npm ls puppeteer

Fedora ELN · python-discovery · FIXED · 1.9.0-1.eln159 · FEDORA-2026-7a881c0c99 · source

sudo dnf upgrade --advisory=FEDORA-2026-7a881c0c99

Fedora 46 · pipx · FIXED · 1.18.11-1.fc46 · FEDORA-2026-443a765287 · source

sudo dnf upgrade --advisory=FEDORA-2026-443a765287

Debian 12 · chromium · FIXED · 72.0.3626.121-1

sudo apt update && sudo apt install --only-upgrade chromium dpkg --compare-versions "$(dpkg-query -W -f='${Version}' chromium)" ge "72.0.3626.121-1" && echo PATCHED || echo STILL-VULNERABLE

Debian 13 · chromium · FIXED · 72.0.3626.121-1

sudo apt update && sudo apt install --only-upgrade chromium dpkg --compare-versions "$(dpkg-query -W -f='${Version}' chromium)" ge "72.0.3626.121-1" && echo PATCHED || echo STILL-VULNERABLE

RHEL 6 Supplementary · chromium-browser · FIXED · chromium-browser-72.0.3626.121-1.el6_10

sudo dnf upgrade --advisory=RHSA-2019:0481 rpm -q chromium-browser

Alpine 3.20 · chromium · FIXED · chromium-72.0.3626.121-r0

apk add --upgrade chromium apk info -v chromium

Alpine 3.21 · chromium · FIXED · chromium-72.0.3626.121-r0

apk add --upgrade chromium apk info -v chromium

Alpine 3.22 · chromium · FIXED · chromium-72.0.3626.121-r0

apk add --upgrade chromium apk info -v chromium

Alpine 3.23 · chromium · FIXED · chromium-72.0.3626.121-r0

apk add --upgrade chromium apk info -v chromium

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: exodusintel/CVE-2019-5786 (255 stars)
Exploit-DB: Google Chrome 72.0.3626.119 - 'FileReader' Use-After-Free (Metasploit)
Metasploit: Chrome 72.0.3626.119 FileReader UaF exploit for Windows 7 x86

Verify at the official source NVD · CVE Program · CISA KEV catalog · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-5786?

chrome: upgrade to 72.0.3626.121. Exact commands for each OS are on this page.

Is CVE-2019-5786 being exploited?

Yes. CVE-2019-5786 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

What does CVE-2019-5786 affect?

CVE-2019-5786 affects chrome. Severity is medium (CVSS 6.5). Object lifetime issue in Blink in Google Chrome prior to 72.0.3626.121 allowed a remote attacker to potentially perform out of bounds memory access via a crafted HTML page.

How urgent is CVE-2019-5786?

Priority 78/100. EPSS top 1%: very likely to be exploited; Exploited in the wild (CISA KEV); Public exploit reference

Software pages

Google Chrome vulnerabilities

Related CVEs

CVE-2026-76031 HIGH 8.8 UPGRADE Use after free in Input in Google Chrome prior to 156.0.8078.79 allowed a remote attacker to execute arbitrary
CVE-2026-76030 HIGH 8.8 UPGRADE Memory corruption in FileSystem in Google Chrome prior to 156.0.8078.79 allowed a remote attacker to potential
CVE-2026-76029 HIGH 8.8 UPGRADE Memory corruption in Network in Google Chrome prior to 156.0.8078.79 allowed a remote attacker to potentially
CVE-2026-76028 HIGH 8.8 UPGRADE Use after free in FileSystem in Google Chrome prior to 156.0.8078.79 allowed a remote attacker to execute arbi
CVE-2026-76026 HIGH 8.8 UPGRADE Memory corruption in Autofill in Google Chrome prior to 156.0.8078.79 allowed a remote attacker to execute arb

References

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