Evidence used
- No CISA KEV confirmation is currently recorded.
- EPSS is 0.63% for the current model date.
BlackTreeCVE IntelligenceFull vulnerability report · 2026
CVE-2026-82393High confidence
pnpm: A tarball dependency's manifest `name` escapes node_modules → arbitrary file write/overwrite on install
pnpm · pnpm
Official source article: GitHub GHSA-VQ4V-J7R6-JQ4M ↗. Check the applicable product and release in the original source.
7.5HighCVSS 3.1
Within 7 days
Fix not verifiedHigh technical severity; prioritise exposed affected systems while verifying vendor guidance.
R
Open reassessment dashboard →Operational reassessment
Published severity in operational context
Published severityHigh→Operational priority:High, unchanged from published severity.unchanged
Compensating controls
- 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 pnpm pnpm and falls inside the recorded affected range.
- Recheck the vendor advisory before scheduling a change because no verified fixed version is currently retained.
- 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 ranges2 source-attributed ranges
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 |
|---|---|---|---|
| npmpnpm | < 10.34.5 | 10.34.5 | GitHub advisory ↗upstream repository advisory · 2 Sep 2026 |
| npmpnpm | >= 11.0.0, < 11.11.0 | 11.11.0 | GitHub advisory ↗upstream repository advisory · 2 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-2026-82393 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitypnpm: pnpm: Arbitrary file write and code execution via path traversal in tarball dependency manifest
The vendor explicitly states that these products are not affected by this CVE.
- amq-broker-bin.zip as a component of Red Hat AMQ Broker 7
- amq-broker-maven-repository.zip as a component of Red Hat AMQ Broker 7
- keycloak-operator.redhat-00001.zip as a component of Red Hat Build of Keycloak
- rhbk-quarkus-dist.zip as a component of Red Hat Build of Keycloak
- jaeger.src as a component of Red Hat Hardened Images
- prometheus3.13.src as a component of Red Hat Hardened Images
- jboss-eap-runtime-maven-repository.zip as a component of Red Hat JBoss Enterprise Application Platform 8
- jboss-eap.1-runtime-maven-repository.zip as a component of Red Hat JBoss Enterprise Application Platform 8
- jboss-eap-runtime-maven-repository.zip as a component of Red Hat JBoss Enterprise Application Platform Expansion Pack
- jboss-eap.1-runtime-maven-repository.zip as a component of Red Hat JBoss Enterprise Application Platform Expansion Pack
- Summary
- A flaw was found in pnpm. This vulnerability allows a remote attacker to perform a path traversal by crafting a malicious tarball dependency's manifest name. During package installation, pnpm fails to properly validate the manifest name, leading to files being extracted outside the intended `node_modules` directory. This can result in attacker-controlled files overwriting arbitrary filesystem paths, potentially leading to arbitrary code execution on the affected system.
- Remediation
- No remediation text is recorded.
High technical severity; prioritise exposed affected systems while verifying vendor guidance.
Fix not verified01
What, why and how
pnpm is a package manager. Prior to 10.34.5 and 11.11.0, pnpm accepts a scoped path traversal in a tarball dependency's package.json manifest name because pnpm11/resolving/npm-resolver/src/pickPackage.ts rejects slash characters only for unscoped names. During pnpm install, the unvalidated name reaches raw path joins in pnpm11/installing/deps-resolver/src/resolvePeers.ts, pnpm11/installing/deps-resolver/src/index.ts, and pnpm11/deps/graph-builder/src/lockfileToDepGraph.ts, causing package extraction outside node_modules and allowing attacker-controlled files to overwrite arbitrary filesystem paths even when --ignore-scripts is used. The overwrite can replace shell startup files, Git hooks, or installed package code and lead to code execution. This issue is fixed in versions 10.34.5, and 11.11.0.
What
pnpm is a package manager. Prior to 10.34.5 and 11.11.0, pnpm accepts a scoped path traversal in a tarball dependency's package.json manifest name because pnpm11/resolving/npm-resolver/src/pickPackage.ts rejects slash characters only for unscoped names. During pnpm install, the unvalidated name reaches raw path joins in pnpm11/installing/deps-resolver/src/resolvePeers.ts, pnpm11/installing/deps-resolver/src/index.ts, and pnpm11/deps/graph-builder/src/lockfileToDepGraph.ts, causing package extraction outside node_modules and allowing attacker-controlled files to overwrite arbitrary filesystem paths even when --ignore-scripts is used. The overwrite can replace shell startup files, Git hooks, or installed package code and lead to code execution. This issue is fixed in versions 10.34.5, and 11.11.0.
Why
Attacker-controlled path data is not constrained to the intended directory before the application accesses a file.
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
pnpm is a package manager. Prior to 10.34.5 and 11.11.0, pnpm accepts a scoped path traversal in a tarball dependency's package.json manifest name because pnpm11/resolving/npm-resolver/src/pickPackage.ts rejects slash characters only for unscoped names. During pnpm install, the unvalidated name reaches raw path joins in pnpm11/installing/deps-resolver/src/resolvePeers.ts, pnpm11/installing/deps-resolver/src/index.ts, and pnpm11/deps/graph-builder/src/lockfileToDepGraph.ts, causing package extraction outside node_modules and allowing attacker-controlled files to overwrite arbitrary filesystem paths even when --ignore-scripts is used. The overwrite can replace shell startup files, Git hooks, or installed package code and lead to code execution. This issue is fixed in versions 10.34.5, and 11.11.0.
Why
Attacker-controlled path data is not constrained to the intended directory before the application accesses a file.
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.
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 Limitation of a Pathname to a Restricted Directory ('Path Traversal') → 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
- 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-22 ↗
CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'). The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
- 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:N/UI:R/S:U/C:H/I:H/A:HCommon 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.PRNonePrivileges required: The attacker does not need an account or existing privileges.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major 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. - Fix not verified
- Affected
- pnpm: < 10.34.5, >= 11.0.0, < 11.11.0
- 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.
04
Evidence and provenance
Published 31 Aug 2026 · Last source change 2 Sept 2026, 03:55 UTC · CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVE recordCVE.org · 5.2
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-2026-68883
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCNA
NVD statusNVD not scheduled
Core structured fields are present and their contributing authorities are shown above.
Material change intelligence
View recent updates ↗What changed after publication
- Vendor guidanceAuthoritative vendor guidance changed from remediation: access.redhat.com/CVE-2026-82393 to remediation: access.redhat.com/CVE-2026-82393.Red Hat Product Security ↗
- Before
- remediation: access.redhat.com/CVE-2026-82393
- After
- remediation: access.redhat.com/CVE-2026-82393
- Affected versionsThe structured affected or fixed version information changed.Red Hat Product Security ↗
- Before
- jboss-eap-runtime-maven-repository.zip as a component of Red Hat JBoss Enterprise Application Platform 8; jboss-eap.1-runtime-maven-repository.zip as a component of Red Hat JBoss Enterprise Application Platform 8; jboss-eap-runtime-maven-repository.zip as a component of Red Hat JBoss Enterprise Application Platform Expansion Pack; jboss-eap.1-runtime-maven-repository.zip as a component of Red Hat JBoss Enterprise Application Platform Expansion Pack
- After
- Affected versionsThe structured affected or fixed version information changed.Red Hat Product Security ↗
- Before
- keycloak-operator.redhat-00001.zip as a component of Red Hat Build of Keycloak; rhbk-quarkus-dist.zip as a component of Red Hat Build of Keycloak; jboss-eap-runtime-maven-repository.zip as a component of Red Hat JBoss Enterprise Application Platform 8; jboss-eap.1-runtime-maven-repository.zip as a component of Red Hat JBoss Enterprise Application Platform 8; jboss-eap-runtime-maven-repository.zip as a component of Red Hat JBoss Enterprise Application Platform Expansion Pack; jboss-eap.1-runtime-maven-repository.zip as a component of Red Hat JBoss Enterprise Application Platform Expansion Pack
- After
- jboss-eap-runtime-maven-repository.zip as a component of Red Hat JBoss Enterprise Application Platform 8; jboss-eap.1-runtime-maven-repository.zip as a component of Red Hat JBoss Enterprise Application Platform 8; jboss-eap-runtime-maven-repository.zip as a component of Red Hat JBoss Enterprise Application Platform Expansion Pack; jboss-eap.1-runtime-maven-repository.zip as a component of Red Hat JBoss Enterprise Application Platform Expansion Pack
- Public exploit evidencePublic exploit evidence changed from Public exploit reference to No public exploit.CVE.org ↗
- Before
- Public exploit reference
- After
- No public exploit
- Public exploit evidencePublic exploit evidence changed from No public exploit to Public exploit reference.CVE.org ↗
- Before
- No public exploit
- After
- Public exploit reference
- ENISA EUVD mappingEUVD-2026-68883 was added to the official ENISA EUVD mapping for this CVE.ENISA EUVD ↗
- Before
- not recorded
- After
- {"euvdId":"EUVD-2026-68883"}
- Catalogue recordCVE added to the BlackTree catalogue.CNA ↗
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.