CVE-2026-29203 - Vulnerability Details - OpenCVE

A chmod call in the cPanel Nova plugin's Cpanel::Nova::Connector follows symlinks, allowing setting root permissions on arbitrary system files or directories. That can cause DoS or local privilege escalation when an authenticated cPanel user places a symlink at a user-controlled legacy Nova path under their home directory.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

No data.

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors	Products

References

Link	Providers
https://support.cpanel.net/hc/en-us/articles/40311543760407-Security-CVE-2026-29203-cPanel-WHM-WP2-Security-Update-May-08-2026

History

Fri, 08 May 2026 21:30:00 +0000

Type	Values Removed	Values Added
Title		Symlink Traversal Allowing Local Privilege Escalation in cPanel Nova

Fri, 08 May 2026 20:15:00 +0000

Type	Values Removed	Values Added
Metrics		cvssV3_1 `{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Fri, 08 May 2026 19:00:00 +0000

Type	Values Removed	Values Added
Description		A chmod call in the cPanel Nova plugin's Cpanel::Nova::Connector follows symlinks, allowing setting root permissions on arbitrary system files or directories. That can cause DoS or local privilege escalation when an authenticated cPanel user places a symlink at a user-controlled legacy Nova path under their home directory.
Weaknesses		CWE-61
References		https://support.cpanel.net/hc/en-us/articles/40311543760407-Security-CVE-2026-29203-cPanel-WHM-WP2-Security-Update-May-08-2026

MITRE

Status: PUBLISHED

Assigner: hackerone

Published: 2026-05-08T18:51:05.541Z

Updated: 2026-05-08T19:22:12.991Z

Reserved: 2026-03-04T15:00:09.267Z

Link: CVE-2026-29203

Vulnrichment

Updated: 2026-05-08T19:20:00.014Z

NVD

Status : Received

Published: 2026-05-08T19:16:30.147

Modified: 2026-05-08T20:16:30.013

Link: CVE-2026-29203

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-05-08T21:30:05Z

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-29203", "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "state": "PUBLISHED", "assignerShortName": "hackerone", "dateReserved": "2026-03-04T15:00:09.267Z", "datePublished": "2026-05-08T18:51:05.541Z", "dateUpdated": "2026-05-08T19:22:12.991Z"}, "containers": {"cna": {"descriptions": [{"lang": "en", "value": "A chmod call in the cPanel Nova plugin's Cpanel::Nova::Connector follows symlinks, allowing setting root permissions on arbitrary system files or directories. That can cause DoS or local privilege escalation when an authenticated cPanel user places a symlink at a user-controlled legacy Nova path under their home directory."}], "affected": [{"defaultStatus": "unaffected", "vendor": "WebPros", "product": "cPanel", "versions": [{"version": "11.136.0.0", "status": "affected", "lessThan": "11.136.0.9", "versionType": "semver"}, {"version": "11.134.0.0", "status": "affected", "lessThan": "11.134.0.25", "versionType": "semver"}, {"version": "11.132.0.0", "status": "affected", "lessThan": "11.132.0.31", "versionType": "semver"}, {"version": "11.130.0.0", "status": "affected", "lessThan": "11.130.0.22", "versionType": "semver"}, {"version": "11.126.0.0", "status": "affected", "lessThan": "11.126.0.58", "versionType": "semver"}, {"version": "11.124.0.0", "status": "affected", "lessThan": "11.124.0.37", "versionType": "semver"}, {"version": "11.118.0.0", "status": "affected", "lessThan": "11.118.0.66", "versionType": "semver"}, {"version": "11.110.0.0", "status": "affected", "lessThan": "11.110.0.116", "versionType": "semver"}, {"version": "11.110.0.0", "status": "affected", "lessThan": "11.110.0.117", "versionType": "semver"}, {"version": "11.102.0.0", "status": "affected", "lessThan": "11.102.0.41", "versionType": "semver"}, {"version": "11.94.0.0", "status": "affected", "lessThan": "11.94.0.30", "versionType": "semver"}, {"version": "11.86.0.0", "status": "affected", "lessThan": "11.86.0.43", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "vendor": "WebPros", "product": "cPanel (CentOS 6, CloudLinux 6)", "versions": [{"version": "11.110.0.0", "status": "affected", "lessThan": "11.110.114", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "vendor": "WebPros", "product": "WP Squared", "versions": [{"version": "11.136.1.0", "status": "affected", "lessThan": "11.136.1.10", "versionType": "semver"}]}], "references": [{"url": "https://support.cpanel.net/hc/en-us/articles/40311543760407-Security-CVE-2026-29203-cPanel-WHM-WP2-Security-Update-May-08-2026"}], "problemTypes": [{"descriptions": [{"type": "CWE", "lang": "en", "cweId": "CWE-61", "description": "CWE-61 UNIX Symbolic Link (Symlink) Following"}]}], "providerMetadata": {"orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "shortName": "hackerone", "dateUpdated": "2026-05-08T18:51:05.541Z"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-05-08T19:19:49.649943Z", "id": "CVE-2026-29203", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-08T19:22:12.991Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2026-29203", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-05-08T19:19:49.649943Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-08T19:20:00.014Z"}}], "cna": {"affected": [{"vendor": "WebPros", "product": "cPanel", "versions": [{"status": "affected", "version": "11.136.0.0", "lessThan": "11.136.0.9", "versionType": "semver"}, {"status": "affected", "version": "11.134.0.0", "lessThan": "11.134.0.25", "versionType": "semver"}, {"status": "affected", "version": "11.132.0.0", "lessThan": "11.132.0.31", "versionType": "semver"}, {"status": "affected", "version": "11.130.0.0", "lessThan": "11.130.0.22", "versionType": "semver"}, {"status": "affected", "version": "11.126.0.0", "lessThan": "11.126.0.58", "versionType": "semver"}, {"status": "affected", "version": "11.124.0.0", "lessThan": "11.124.0.37", "versionType": "semver"}, {"status": "affected", "version": "11.118.0.0", "lessThan": "11.118.0.66", "versionType": "semver"}, {"status": "affected", "version": "11.110.0.0", "lessThan": "11.110.0.116", "versionType": "semver"}, {"status": "affected", "version": "11.110.0.0", "lessThan": "11.110.0.117", "versionType": "semver"}, {"status": "affected", "version": "11.102.0.0", "lessThan": "11.102.0.41", "versionType": "semver"}, {"status": "affected", "version": "11.94.0.0", "lessThan": "11.94.0.30", "versionType": "semver"}, {"status": "affected", "version": "11.86.0.0", "lessThan": "11.86.0.43", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "WebPros", "product": "cPanel (CentOS 6, CloudLinux 6)", "versions": [{"status": "affected", "version": "11.110.0.0", "lessThan": "11.110.114", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "WebPros", "product": "WP Squared", "versions": [{"status": "affected", "version": "11.136.1.0", "lessThan": "11.136.1.10", "versionType": "semver"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://support.cpanel.net/hc/en-us/articles/40311543760407-Security-CVE-2026-29203-cPanel-WHM-WP2-Security-Update-May-08-2026"}], "descriptions": [{"lang": "en", "value": "A chmod call in the cPanel Nova plugin's Cpanel::Nova::Connector follows symlinks, allowing setting root permissions on arbitrary system files or directories. That can cause DoS or local privilege escalation when an authenticated cPanel user places a symlink at a user-controlled legacy Nova path under their home directory."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-61", "description": "CWE-61 UNIX Symbolic Link (Symlink) Following"}]}], "providerMetadata": {"orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "shortName": "hackerone", "dateUpdated": "2026-05-08T18:51:05.541Z"}}}, "cveMetadata": {"cveId": "CVE-2026-29203", "state": "PUBLISHED", "dateUpdated": "2026-05-08T19:22:12.991Z", "dateReserved": "2026-03-04T15:00:09.267Z", "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "datePublished": "2026-05-08T18:51:05.541Z", "assignerShortName": "hackerone"}, "dataVersion": "5.2"}