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ExploitedIn CISA KEVFix available

CVE-2019-8720

Exploitation confirmed. First attested on 2022-05-23 by CISA-ADP, CISA KEV, GCVE · kevintel.

  • Published2023-03-06
  • Fixed in2.26.0
  • WeaknessCWE-119

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A vulnerability was found in WebKit. The flaw is triggered when processing maliciously crafted web content that may lead to arbitrary code execution. Improved memory handling addresses the multiple memory corruption issues.

Timeline

dates in UTC
  1. 2022-05-23Added to the CISA KEV catalogCISA KEV
  2. 2022-05-23Listed as exploited by GCVEGCVE
  3. 2022-05-23Exploitation first reportedCISA KEV
  4. 2023-03-0623:15CVE publishedNVD
  5. 2025-01-2821:22SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-04 09:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-8720?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-8720?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Webkitgtk
BranchAffectedFixed in
2.26< 2.26.02.26.0
Redhat codeready linux builder for arm64 eus
BranchAffectedFixed in
8.0= 8.0no fix published
8.4= 8.4no fix published
8.6= 8.6no fix published
Redhat codeready linux builder for ibm z systems eus
BranchAffectedFixed in
8.0= 8.0no fix published
8.4= 8.4no fix published
8.6= 8.6no fix published

20 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As redhat, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • webkitgtk
    Affected
    • = Fixed in webkitgtk 2.26.0no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2023-03-06

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • dleyna-rendererRocky Linux:8all versions · fixed in 0:0.6.0-3.el8
  • dleyna-rendererAlmaLinux:8all versions · fixed in 0.6.0-3.el8
  • frei0r-pluginsRocky Linux:8all versions · fixed in 0:1.6.1-7.el8
  • frei0r-pluginsAlmaLinux:8all versions · fixed in 1.6.1-7.el8and 2 other packages
  • gnome-remote-desktopRocky Linux:8all versions · fixed in 0:0.1.8-3.el8
  • gnome-remote-desktopAlmaLinux:8all versions · fixed in 0.1.8-3.el8
  • gnome-sessionRocky Linux:8all versions · fixed in 0:3.28.1-10.el8
  • gnome-settings-daemonRed Hat:enterprise_linux:8::appstreamall versions · fixed in 0:3.32.0-11.el8and 2 other packages

83 more package ranges on OSV.dev

Vendor advisories

  • CVE-2019-8720 Red Hat Product Security342 products fixed · 9 known affected

    webkitgtk: Multiple memory corruption issues leading to arbitrary code execution

    webkitgtk as a component of Red Hat Enterprise Linux 6 · webkitgtk-devel as a component of Red Hat Enterprise Linux 6 · webkitgtk-doc as a component of Red Hat Enterprise Linux 6 · +6 more

  • RHSA-2020:4451 Red Hat Product Security46 products fixed

    Red Hat Security Advisory: GNOME security, bug fix, and enhancement update

  • RHSA-2020:4035 Red Hat Product Security81 products fixed

    Red Hat Security Advisory: webkitgtk4 security, bug fix, and enhancement update

Full record on NVD

Fix

  1. Update Webkitgtk to 2.26.0
  2. CISA’s required action: Apply updates per vendor instructions.due 2022-06-13
  3. Vendor fix Red Hat Product Security RHSA-2020:4451 · 46 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 GDM must be restarted for this update to take effect.
  4. Vendor fix Red Hat Product Security RHSA-2020:4035 · 81 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
  5. Workaround from the vendor Red Hat Product Security RHSA-2020:4451 · 936 productsRed Hat has investigated whether possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.
  6. No fix planned, says the vendor Red Hat Product Security CVE-2019-8720 · 4 productsOut of support scope
  7. No fix planned, says the vendor Red Hat Product Security CVE-2019-8720 · 5 productsWill not fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2022-05-23
Patch Due Date
2022-06-13
Ransomware Use
Unknown
Required Action
Apply updates per vendor instructions.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2023-03-06
Last Modified
2026-10-08
NVD status
Analyzed
GitHub Advisory
GHSA-5cgp-g38q-m4xj

Frequently asked questions

What is CVE-2019-8720?

A vulnerability was found in WebKit. The flaw is triggered when processing maliciously crafted web content that may lead to arbitrary code execution. Improved memory handling addresses the multiple memory corruption issues.

Is CVE-2019-8720 actively exploited?

Yes. CVE-2019-8720 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2022-06-13.

What is the CVSS score for CVE-2019-8720?

CVE-2019-8720 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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Sources for this record