A vulnerability was found in WebKit.
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.
- Published
- Mar 6, 2023
- Updated
- Oct 8, 2026
- EPSS
- 1.6% · 74th percentile
- CWE
- CWE-119
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Action score
65
This week
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- CVSS
- 35 / 40 · 8.8 / 10
- CISA KEV
- 30 / 30 · Listed
- EPSS
- 0 / 30 · 1.6%
CISA SSVC decision
- Exploitation
- active
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 8.8
- CNA · redhat
- 8.8
- agree
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Actively exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on May 23, 2022. That signals real attacks, not theory.
Remediation deadline for government agencies: Jun 13, 2022.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| webkitgtk | webkitgtk | cpe:2.3:a:webkitgtk:webkitgtk |
| wpewebkit | wpe webkit | cpe:2.3:a:wpewebkit:wpe_webkit |
| redhat | codeready linux builder | cpe:2.3:a:redhat:codeready_linux_builder |
| redhat | codeready linux builder eus | cpe:2.3:a:redhat:codeready_linux_builder_eus |
| redhat | codeready linux builder for arm64 eus | cpe:2.3:a:redhat:codeready_linux_builder_for_arm64_eus |
| redhat | codeready linux builder for ibm z systems eus | cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems_eus |
| redhat | codeready linux builder for power little endian eus | cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian_eus |
| redhat | enterprise linux | cpe:2.3:o:redhat:enterprise_linux |
| redhat | enterprise linux desktop | cpe:2.3:o:redhat:enterprise_linux_desktop |
| redhat | enterprise linux eus | cpe:2.3:o:redhat:enterprise_linux_eus |
| redhat | enterprise linux for arm64 eus | cpe:2.3:o:redhat:enterprise_linux_for_arm64_eus |
| redhat | enterprise linux for ibm z systems | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems |
and 11 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- redhat codeready linux builder8.0
- redhat codeready linux builder eus8.4
- redhat codeready linux builder eus8.6
- redhat codeready linux builder for arm64 eus8.0
- redhat codeready linux builder for arm64 eus8.4
- redhat codeready linux builder for arm64 eus8.6
- redhat codeready linux builder for ibm z systems eus8.0
- redhat codeready linux builder for ibm z systems eus8.4
- redhat codeready linux builder for ibm z systems eus8.6
- redhat codeready linux builder for power little endian eus8.0
- redhat codeready linux builder for power little endian eus8.4
- redhat codeready linux builder for power little endian eus8.6
- redhat enterprise linux8.0
- redhat enterprise linux desktop7.0
- redhat enterprise linux eus8.4
- redhat enterprise linux eus8.6
- redhat enterprise linux for arm64 eus8.6
- redhat enterprise linux for ibm z systems7.0
- redhat enterprise linux for ibm z systems8.0
- redhat enterprise linux for ibm z systems eus8.4
Versions reported by the vendor
Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.
n/a webkitgtk
- Fixed in webkitgtk 2.26.0affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:8 | dleyna-renderer | before 0.6.0-3.el8 | 0.6.0-3.el8 |
| AlmaLinux:8 | frei0r-devel | before 1.6.1-7.el8 | 1.6.1-7.el8 |
| AlmaLinux:8 | frei0r-plugins | before 1.6.1-7.el8 | 1.6.1-7.el8 |
| AlmaLinux:8 | frei0r-plugins-opencv | before 1.6.1-7.el8 | 1.6.1-7.el8 |
| AlmaLinux:8 | gnome-remote-desktop | before 0.1.8-3.el8 | 0.1.8-3.el8 |
| AlmaLinux:8 | gtk-doc | before 1.28-2.el8 | 1.28-2.el8 |
| AlmaLinux:8 | gvfs | before 1.36.2-10.el8 | 1.36.2-10.el8 |
| AlmaLinux:8 | LibRaw-devel | before 0.19.5-2.el8 | 0.19.5-2.el8 |
| AlmaLinux:8 | libsoup | before 2.62.3-2.el8 | 2.62.3-2.el8 |
| AlmaLinux:8 | libsoup-devel | before 2.62.3-2.el8 | 2.62.3-2.el8 |
| AlmaLinux:8 | mutter-devel | before 3.32.2-48.el8 | 3.32.2-48.el8 |
| AlmaLinux:8 | nautilus | before 3.28.1-14.el8 | 3.28.1-14.el8 |
| AlmaLinux:8 | nautilus-devel | before 3.28.1-14.el8 | 3.28.1-14.el8 |
| AlmaLinux:8 | PackageKit | before 1.1.12-6.el8 | 1.1.12-6.el8 |
| AlmaLinux:8 | PackageKit-command-not-found | before 1.1.12-6.el8 | 1.1.12-6.el8 |
| AlmaLinux:8 | PackageKit-cron | before 1.1.12-6.el8 | 1.1.12-6.el8 |
| AlmaLinux:8 | PackageKit-glib | before 1.1.12-6.el8 | 1.1.12-6.el8 |
| AlmaLinux:8 | PackageKit-glib-devel | before 1.1.12-6.el8 | 1.1.12-6.el8 |
| AlmaLinux:8 | PackageKit-gstreamer-plugin | before 1.1.12-6.el8 | 1.1.12-6.el8 |
| AlmaLinux:8 | PackageKit-gtk3-module | before 1.1.12-6.el8 | 1.1.12-6.el8 |
| AlmaLinux:8 | pipewire | before 0.3.6-1.el8 | 0.3.6-1.el8 |
| AlmaLinux:8 | pipewire-devel | before 0.3.6-1.el8 | 0.3.6-1.el8 |
| AlmaLinux:8 | pipewire-doc | before 0.3.6-1.el8 | 0.3.6-1.el8 |
| AlmaLinux:8 | pipewire-libs | before 0.3.6-1.el8 | 0.3.6-1.el8 |
+55
Same product
webkitgtk: all recordsOther highest-scoring records for the same primary product.
- CVE-2019-8375The UIProcess subsystem in WebKit, as used in WebKitGTK through 2.23.90 and WebKitGTK+ through 2.22.6 and other products, does not prevent t44Plan
- CVE-2020-13753The bubblewrap sandbox of WebKitGTK and WPE WebKit, prior to 2.28.3, failed to properly block access to CLONE_NEWUSER and the TIOCSTI ioctl.41Plan
- CVE-2020-10018WebKitGTK through 2.26.4 and WPE WebKit through 2.26.4 (which are the versions right before 2.28.0) contains a memory corruption issue (use-40Plan
- CVE-2021-21806An exploitable use-after-free vulnerability exists in WebKitGTK browser version 2.30.3 x64.36Monitor
- CVE-2021-21779A use-after-free vulnerability exists in the way Webkit’s GraphicsContext handles certain events in WebKitGTK 2.30.4.36Monitor
- CVE-2020-13558A code execution vulnerability exists in the AudioSourceProviderGStreamer functionality of Webkit WebKitGTK 2.30.1.36Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| almalinux:dleyna-renderer | 0.6.0-3.el8 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:frei0r-devel | 1.6.1-7.el8 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:frei0r-plugins | 1.6.1-7.el8 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:frei0r-plugins-opencv | 1.6.1-7.el8 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:LibRaw-devel | 0.19.5-2.el8 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:PackageKit | 1.1.12-6.el8 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:PackageKit-command-not-found | 1.1.12-6.el8 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:PackageKit-cron | 1.1.12-6.el8 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:PackageKit-glib | 1.1.12-6.el8 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:PackageKit-glib-devel | 1.1.12-6.el8 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:PackageKit-gstreamer-plugin | 1.1.12-6.el8 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:PackageKit-gtk3-module | 1.1.12-6.el8 · AlmaLinux:8 | Package registry (OSV) |
| debian:webkit2gtk | 2.26.0-1 · Debian:12 | Package registry (OSV) |
| opensuse:webkit2gtk3 | 2.26.2-lp150.2.28.1 · openSUSE:Leap 15.0 | Package registry (OSV) |
| red hat:gnome-settings-daemon | 0:3.32.0-11.el8 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:gnome-settings-daemon-debuginfo | 0:3.32.0-11.el8 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:gnome-settings-daemon-debugsource | 0:3.32.0-11.el8 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:webkit2gtk3 | 0:2.28.4-1.el8 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:webkit2gtk3-debuginfo | 0:2.28.4-1.el8 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:webkit2gtk3-debugsource | 0:2.28.4-1.el8 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:webkit2gtk3-devel | 0:2.28.4-1.el8 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:webkit2gtk3-devel-debuginfo | 0:2.28.4-1.el8 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:webkit2gtk3-jsc | 0:2.28.4-1.el8 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:webkit2gtk3-jsc-debuginfo | 0:2.28.4-1.el8 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:webkit2gtk3-jsc-devel | 0:2.28.4-1.el8 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:webkit2gtk3-jsc-devel-debuginfo | 0:2.28.4-1.el8 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| rocky linux:dleyna-renderer | 0:0.6.0-3.el8 · Rocky Linux:8 | Package registry (OSV) |
| rocky linux:frei0r-plugins | 0:1.6.1-7.el8 · Rocky Linux:8 | Package registry (OSV) |
| rocky linux:gnome-remote-desktop | 0:0.1.8-3.el8 · Rocky Linux:8 | Package registry (OSV) |
| rocky linux:gnome-session | 0:3.28.1-10.el8 · Rocky Linux:8 | Package registry (OSV) |
+9
Exploit status
Weaponized
A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- CISA KEV-288 d
- Published
- TodayOct 10, 2026+1313 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-22-0552 · Aug 15, 2022(RedHat Güvenlik Güncellemesi)
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- A user must open a link or visit a page.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory BufferCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Overflow BuffersCAPEC-100likelihood: High · Very High
- Buffer ManipulationCAPEC-123likelihood: High · Very High
- Client-side Injection-induced Buffer OverflowCAPEC-14likelihood: Medium · High
- Filter Failure through Buffer OverflowCAPEC-24likelihood: High · High
- MIME ConversionCAPEC-42likelihood: High · High
- Overflow Binary Resource FileCAPEC-44likelihood: High · Very High
- Buffer Overflow via Symbolic LinksCAPEC-45likelihood: High · High
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- bugzilla.redhat.com/show_bug.cgi?id=1876611
- webkitgtk.org/security/WSA-2019-0005.html
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-8720
Vendor advisories and official records. Exploit/PoC links are deliberately left out.