Evidence used
- No CISA KEV confirmation is currently recorded.
- EPSS is 0.80% for the current model date.
BlackTreeCVE IntelligenceFull vulnerability report · 2019
CVE-2019-16769High confidence
Affected versions of serialize-javascript are vulnerable to Cross-site Scripting (XSS)
yahoo · serialize-javascript
Official source article: GitHub GHSA-H9RV-JMMF-4PGX ↗. Check the applicable product and release in the original source.
4.2MediumCVSS 3.1
Scheduled
Patch availableMedium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.
R
Open reassessment dashboard →Operational reassessment
Published severity in operational context
Published severityMedium→Operational priority:Medium, unchanged from published severity.unchanged
Compensating controls
- Validate the affected product branch and deploy the verified fixed release.
- Restrict the affected network interface to trusted sources where business-safe.
- Monitor vendor guidance and exploitation sources for a material change.
Verification
- Confirm that the asset runs yahoo serialize-javascript and falls inside the recorded affected range.
- Verify the installed build against the product-specific fixed version after deployment.
- Validate exposure, authentication requirements and compensating controls in the actual environment.
- Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Open-source package ranges1 source-attributed range
These OSV and GitHub advisory ranges apply only to the named package and ecosystem. A listed fixed version is not a universal product patch or proof that an update is installed.
| Ecosystem and package | Affected range | First fixed version | Evidence |
|---|---|---|---|
| npmserialize-javascript | SEMVER: introduced 0; fixed 2.1.1 | 2.1.1 | OSV record ↗aggregator derived · 10 Sep 2026 |
Direct vendor intelligence
1 currentAuthoritative vendor CSAF and VEX advisories
Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.
CVE-2019-16769 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitynpm-serialize-javascript: XSS via unsafe characters in serialized regular expressions
The vendor explicitly identifies these products as affected by this CVE.
- openshift4/ose-prometheus-rhel9 as a component of Red Hat OpenShift Container Platform 4
- kubevirt-web-ui-container as a component of Red Hat OpenShift Virtualization 1
- nodejs-serialize-javascript.src as a component of Red Hat Quay 3
- Summary
- A XSS flaw was found in npm-serialize-javascript. It does not properly mitigate against unsafe characters in serialized regular expressions. This vulnerability is not affected on Node.js environment since Node.js's implementation of RegExp.prototype.toString() backslash-escapes all forward slashes in regular expressions. If serialized data of regular expression objects are used in an environment other than Node.js, it is affected by this vulnerability.
- Remediation
- The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/latest/service_mesh/servicemesh-release-notes.html
Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.
Patch available01
What, why and how
The serialize-javascript npm package before version 2.1.1 is vulnerable to Cross-site Scripting (XSS). It does not properly mitigate against unsafe characters in serialized regular expressions. This vulnerability is not affected on Node.js environment since Node.js's implementation of RegExp.prototype.toString() backslash-escapes all forward slashes in regular expressions. If serialized data of regular expression objects are used in an environment other than Node.js, it is affected by this vulnerability.
What
The serialize-javascript npm package before version 2.1.1 is vulnerable to Cross-site Scripting (XSS). It does not properly mitigate against unsafe characters in serialized regular expressions. This vulnerability is not affected on Node.js environment since Node.js's implementation of RegExp.prototype.toString() backslash-escapes all forward slashes in regular expressions. If serialized data of regular expression objects are used in an environment other than Node.js, it is affected by this vulnerability.
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 with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
What
The serialize-javascript npm package before version 2.1.1 is vulnerable to Cross-site Scripting (XSS). It does not properly mitigate against unsafe characters in serialized regular expressions. This vulnerability is not affected on Node.js environment since Node.js's implementation of RegExp.prototype.toString() backslash-escapes all forward slashes in regular expressions. If serialized data of regular expression objects are used in an environment other than Node.js, it is affected by this vulnerability.
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 with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
02
Exploit reality and attack path
CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.
Observed exploitation No confirmed evidence
?
Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.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 None recorded
?
Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.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
- Low: a basic authenticated account is required
- User interaction
- None
- Attack complexity
- High: exploitation depends on specific conditions
- Security boundary
- Unchanged: impact remains within the vulnerable component's 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:H/PR:L/UI:N/S:U/C:N/I:L/A:LCommon 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.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.ILowIntegrity impact: A successful attack can cause a limited loss.ALowAvailability impact: A successful attack can cause a limited loss.- 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.
03
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. - Patch available
- Affected
- Fixed
- servicemesh-grafana-0:6.4.3-11.el8.src as a component of OpenShift Service Mesh 1.1
- servicemesh-grafana-0:6.4.3-11.el8.x86_64 as a component of OpenShift Service Mesh 1.1
- servicemesh-grafana-prometheus-0:6.4.3-11.el8.x86_64 as a component of OpenShift Service Mesh 1.1
- openshift4/ose-grafana@sha256:8248dec0d94b2928aa4d63a22973d9a8f8f173a1431b2ab4ad15fdfe80283d7c_amd64 as a component of Red Hat OpenShift Container Platform 4.6
- openshift4/ose-grafana@sha256:bdc7ce24fe3415b842383b724a7b047e57c0b4d9c6a337d7e37ec3a0240ae3aa_ppc64le as a component of Red Hat OpenShift Container Platform 4.6
- openshift4/ose-grafana@sha256:d5ada30dc820a3de1427f254c135a99ca536967468a2226460280762df0bfb51_s390x as a component of Red Hat OpenShift Container Platform 4.6
- Action
- The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/latest/service_mesh/servicemesh-release-notes.html
- 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.
04
Evidence and provenance
Published 5 Dec 2019 · Last source change 5 Aug 2024, 01:24 UTC · CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE recordCVE.org · 5.1
CVSS sourceCNA
EPSS source FIRST · tracked since 2026-09-01
?
The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.European sourceENISA EUVD · EUVD-2019-0792
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD modified after enrichment
Core structured fields are present and their contributing authorities are shown above.
Material change intelligence
View recent updates ↗What changed after publication
- Affected versionsThe structured affected or fixed version information changed.Red Hat Product Security ↗
- Before
- openshift4/ose-prometheus as a component of Red Hat OpenShift Container Platform 4; kubevirt-web-ui-container as a component of Red Hat OpenShift Virtualization 1; nodejs-serialize-javascript.src as a component of Red Hat Quay 3 · Fixed: servicemesh-grafana-0:6.4.3-11.el8.src as a component of OpenShift Service Mesh 1.1; servicemesh-grafana-0:6.4.3-11.el8.x86_64 as a component of OpenShift Service Mesh 1.1; servicemesh-grafana-prometheus-0:6.4.3-11.el8.x86_64 as a component of OpenShift Service Mesh 1.1; openshift4/ose-grafana@sha256:8248dec0d94b2928aa4d63a22973d9a8f8f173a1431b2ab4ad15fdfe80283d7c_amd64 as a component of Red Hat OpenShift Container Platform 4.6; openshift4/ose-grafana@sha256:bdc7ce24fe3415b842383b724a7b047e57c0b4d9c6a337d7e37ec3a0240ae3aa_ppc64le as a component of Red Hat OpenShift Container Platform 4.6; openshift4/ose-grafana@sha256:d5ada30dc820a3de1427f254c135a99ca536967468a2226460280762df0bfb51_s390x as a component of Red Hat OpenShift Container Platform 4.6
- After
- openshift4/ose-prometheus-rhel9 as a component of Red Hat OpenShift Container Platform 4; kubevirt-web-ui-container as a component of Red Hat OpenShift Virtualization 1; nodejs-serialize-javascript.src as a component of Red Hat Quay 3 · Fixed: servicemesh-grafana-0:6.4.3-11.el8.src as a component of OpenShift Service Mesh 1.1; servicemesh-grafana-0:6.4.3-11.el8.x86_64 as a component of OpenShift Service Mesh 1.1; servicemesh-grafana-prometheus-0:6.4.3-11.el8.x86_64 as a component of OpenShift Service Mesh 1.1; openshift4/ose-grafana@sha256:8248dec0d94b2928aa4d63a22973d9a8f8f173a1431b2ab4ad15fdfe80283d7c_amd64 as a component of Red Hat OpenShift Container Platform 4.6; openshift4/ose-grafana@sha256:bdc7ce24fe3415b842383b724a7b047e57c0b4d9c6a337d7e37ec3a0240ae3aa_ppc64le as a component of Red Hat OpenShift Container Platform 4.6; openshift4/ose-grafana@sha256:d5ada30dc820a3de1427f254c135a99ca536967468a2226460280762df0bfb51_s390x as a component of Red Hat OpenShift Container Platform 4.6
- Affected versionsThe structured affected or fixed version information changed.Red Hat Product Security ↗
- Before
- openshift4/ose-prometheus-rhel9 as a component of Red Hat OpenShift Container Platform 4; kubevirt-web-ui-container as a component of Red Hat OpenShift Virtualization 1; nodejs-serialize-javascript.src as a component of Red Hat Quay 3 · Fixed: servicemesh-grafana-0:6.4.3-11.el8.src as a component of OpenShift Service Mesh 1.1; servicemesh-grafana-0:6.4.3-11.el8.x86_64 as a component of OpenShift Service Mesh 1.1; servicemesh-grafana-prometheus-0:6.4.3-11.el8.x86_64 as a component of OpenShift Service Mesh 1.1; openshift4/ose-grafana@sha256:8248dec0d94b2928aa4d63a22973d9a8f8f173a1431b2ab4ad15fdfe80283d7c_amd64 as a component of Red Hat OpenShift Container Platform 4.6; openshift4/ose-grafana@sha256:bdc7ce24fe3415b842383b724a7b047e57c0b4d9c6a337d7e37ec3a0240ae3aa_ppc64le as a component of Red Hat OpenShift Container Platform 4.6; openshift4/ose-grafana@sha256:d5ada30dc820a3de1427f254c135a99ca536967468a2226460280762df0bfb51_s390x as a component of Red Hat OpenShift Container Platform 4.6
- After
- openshift4/ose-prometheus as a component of Red Hat OpenShift Container Platform 4; kubevirt-web-ui-container as a component of Red Hat OpenShift Virtualization 1; nodejs-serialize-javascript.src as a component of Red Hat Quay 3 · Fixed: servicemesh-grafana-0:6.4.3-11.el8.src as a component of OpenShift Service Mesh 1.1; servicemesh-grafana-0:6.4.3-11.el8.x86_64 as a component of OpenShift Service Mesh 1.1; servicemesh-grafana-prometheus-0:6.4.3-11.el8.x86_64 as a component of OpenShift Service Mesh 1.1; openshift4/ose-grafana@sha256:8248dec0d94b2928aa4d63a22973d9a8f8f173a1431b2ab4ad15fdfe80283d7c_amd64 as a component of Red Hat OpenShift Container Platform 4.6; openshift4/ose-grafana@sha256:bdc7ce24fe3415b842383b724a7b047e57c0b4d9c6a337d7e37ec3a0240ae3aa_ppc64le as a component of Red Hat OpenShift Container Platform 4.6; openshift4/ose-grafana@sha256:d5ada30dc820a3de1427f254c135a99ca536967468a2226460280762df0bfb51_s390x as a component of Red Hat OpenShift Container Platform 4.6
- Affected versionsThe structured affected or fixed version information changed.Red Hat Product Security ↗
- Before
- < 2.1.1 < 2.1.1 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
- After
- < 2.1.1 < 2.1.1 · Fixed: The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/latest/service_mesh/servicemesh-release-notes.html
- Remediation statusRemediation status changed from Awaiting fix to Patch available.Red Hat Product Security ↗
- Before
- Awaiting fix
- After
- Patch available
- ENISA EUVD mappingEUVD-2019-0792 was added to the official ENISA EUVD mapping for this CVE.ENISA EUVD ↗
- Before
- not recorded
- After
- {"euvdId":"EUVD-2019-0792"}
- Catalogue recordCVE added to the BlackTree catalogue.CNA ↗
CVE published
Fixed release recorded from official guidance
Fixed release recorded from official guidance
Fixed release recorded from official guidance
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.