CVE-2019-8813: A logic issue was addressed with improved state management

Distribution release	Source package	Vendor state	Fixed version	Evidence
Debian trixietrixie · source	`webkit2gtk`	Vendor fix publishedDebian records a fixed source-package version for this release.	`2.26.1-1`	Debian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · source	`webkit2gtk`	Vendor fix publishedDebian records a fixed source-package version for this release.	`2.26.1-1`	Debian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · source	`webkit2gtk`	Vendor fix publishedDebian records a fixed source-package version for this release.	`2.26.1-1`	Debian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · source	`webkit2gtk`	Vendor fix publishedDebian records a fixed source-package version for this release.	`2.26.1-1`	Debian Security Tracker ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`qtwebkit-opensource-src`	Under evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.	`Not published in this feed`	Canonical Ubuntu Security ↗Source updated 5 Oct 2026

Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Fix not verified

What, why and how

A logic issue was addressed with improved state management. This issue is fixed in iOS 13.2 and iPadOS 13.2, tvOS 13.2, Safari 13.0.3, iTunes for Windows 12.10.2, iCloud for Windows 11.0. Processing maliciously crafted web content may lead to universal cross site scripting.

What

Why

Attacker-controlled content can reach a browser as executable script without sufficient output encoding or sanitisation.

How

An attacker operating through a network path may attempt exploitation without authentication after a user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Why

Attacker-controlled content can reach a browser as executable script without sufficient output encoding or sanitisation.

How

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation

Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.

No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material

Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.

None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path: a network path → Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface: Network
Privileges required: None: unauthenticated exploitation is possible
User interaction: Required interaction required
Attack complexity: Low: no specialised conditions are recorded
Security boundary: Changed: exploitation can affect a different security authority
Weakness ? CWE means Common Weakness Enumeration: a standard category for the underlying weakness.: CWE-79 ↗
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'). The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CVSS vector ? CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.SChangedScope: The attack can affect a component governed by a different security authority.CLowConfidentiality impact: A successful attack can cause a limited loss.ILowIntegrity impact: A successful attack can cause a limited loss.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land: No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.

NetworkUnauthenticatedCWE-79

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2019-18203Official EUVD mapping

0 linked advisory records.

Official EUVD record ↗

BSI · German · WID-SEC-2024-1479Red Hat Enterprise Linux/WebKitGTK: Mehrere Schwachstellen ermöglichen Ausführen von beliebigem Programmcode mit Benutzerrechten

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in WebKitGTK ausnutzen, um beliebigen Programmcode mit Benutzerrechten auszuführen.

Official advisory ↗

CERT-FR · French · CERTFR-2019-AVI-539Multiples vulnérabilités dans les produits Apple

.cve.org/CVERecord?id=CVE-2019-8801 Référence CVE CVE-2019-8802 https://www.cve.org/CVERecord?id=CVE-2019-8802 Référence CVE CVE-2019-8803 https://www.cve.org/CVERecord?id=CVE-2019-8803 Référence CVE CVE-2019-8804 https://www.cve.org/CVERecord?id=CVE-2019-8804 Référence CVE CVE-2019-8805 https://www.cve.org/CVERecord?id=CVE-2019-8805 Référence CVE CVE-2019-8807 https://www.cve.org/CVERecord?id=CVE-2019-8807 Référence CVE CVE-2019-8808 https://www.cve.org/CVERecord?id=CVE-2019-8808 Référence CVE CVE-2019-8811 https://www.cve.org/CVERecord?id=CVE-2019-8811 Référence CVE CVE-2019-8812 https://www.cve.org/CVERecord?id=CVE-2019-8812 Référence CVE CVE-2019-8813 https://www.cve.org/CVERecord?id=CVE-2019-8813 Référence CVE CVE-2019-8814 https://www.cve.org/CVERecord?id=CVE-2019-8814 Référence CVE CVE-2019-8815 https://www.cve.org/CVERecord?id=CVE-2019-8815 Référence CVE CVE-2019-8816 https://www.cve.org/CVERecord?id=CVE-2019-8816 Référence CVE CVE-2019-8817 https://www.cve.org/CVERecord?id=CVE-2019-8817 Référence CVE CVE-2019-8819 https://www.cve.org/CVERecord?id=CVE-2019-8819 Référence CVE CVE-2019-8820 https://www.cve.org/CVERecord?id=CVE-2019-8820 Référence CVE CVE-2019-8821 https://www.cve.org/CVERecord?id=CVE-2019-8821 Référence CVE CVE-2019-8822 https://www.cve.org/CVERecord?id=CVE-2019-8822 Ré

Official advisory ↗

JVN iPedia · Japanese · JVNDB-2019-011304複数の Apple 製品における脆弱性に対するアップデート

Apple から各製品向けのアップデートが公開されました。

Official advisory ↗

Patch and workaround

Operational remediation based on structured source evidence.

Status ? Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.: Fix not verified
Affected: iOS: unspecified < iOS 13.2 and iPadOS 13.2
tvOS: unspecified < tvOS 13.2
Safari: unspecified < Safari 13.0.3
iTunes for Windows: unspecified < iTunes for Windows 12.10.2
iCloud for Windows: unspecified < iCloud for Windows 11.0
Fixed: No fixed version is explicitly recorded in the structured CVE data.
Action: No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround: No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.

Evidence and provenance

Published 18 Dec 2019 · Last source change 4 Aug 2024, 21:31 UTC · CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVE recordCVE.org · 5.1

CVSS sourceNIST NVD

EPSS source

The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.

FIRST · tracked since 2026-09-01

European sourceENISA EUVD · EUVD-2019-18203

Product sourceCNA

Remediation sourceCVE/CNA references

CWE sourceNIST NVD

NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗

1 Sep 2026, 02:42 UTC
ENISA EUVD mappingEUVD-2019-18203 was added to the official ENISA EUVD mapping for this CVE.
Before
not recorded
After
{"euvdId":"EUVD-2019-18203"}
ENISA EUVD ↗
4 Aug 2024, 21:31 UTC
Vendor guidanceAuthoritative vendor guidance changed: added vendor advisory: support.apple.com/HT210721; added vendor advisory: support.apple.com/HT210723; removed vendor advisory: security.gentoo.org/202003-22; 3 further additions.
Before
vendor advisory: security.gentoo.org/202003-22
After
vendor advisory: support.apple.com/HT210721 · vendor advisory: support.apple.com/HT210723 · vendor advisory: support.apple.com/HT210725 · 2 more references
support.apple.com ↗
4 Aug 2024, 21:31 UTC
SeveritySeverity changed from Unknown to Medium.
Before
Unknown
After
Medium
NIST NVD ↗
4 Aug 2024, 21:31 UTC
CVSS scoreCVSS score changed from not recorded to 6.1 (CVSS 3.1 · NIST NVD · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).
Before
not recorded
After
6.1 (CVSS 3.1 · NIST NVD · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)
NIST NVD ↗
4 Aug 2024, 21:31 UTC
Catalogue recordCVE added to the BlackTree catalogue.
CNA ↗

2019-12-18CVE published

ENISA EUVD · EUVD-2019-18203↗CVE authority or vendor reference↗Vendor advisory↗Vendor advisory↗Vendor advisory↗Official CVE record (CNA and ADP data)↗NVD record↗

Technical terms and abbreviations used in this report

CVE: Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS: Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS: Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE: Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA: CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP: Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD: National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT: A computer security incident response team that publishes warnings or coordinates incident response.
PoC: Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF: Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL: Living off the land: abuse of legitimate tools or system functions during an attack.

A logic issue was addressed with improved state management

Published severity in operational context

Evidence used

Compensating controls

Verification

Release-specific package status

National CERT insights
?
CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

ENISA European Vulnerability Database

EUVD-2019-18203

What, why and how

Exploit reality and attack path

Official authority intelligence

Patch and workaround

Evidence and provenance

What changed after publication