CVE-2026-29963
📛 CVE Title
CVE-2026-29963
Description
HSC MailInspector 5.3.3-7 has a Path Traversal vulnerability due to improper validation of user-supplied input in the /tap/dw.php endpoint. The text parameter is used to construct file paths without adequate normalization or restriction to a safe base directory. A remote attacker can exploit this flaw to access arbitrary files on the underlying operating system, resulting in unauthorized disclosure of sensitive information.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- mitre
- CVSS severity
- high
- CVSS score
- 7.5 / 10
- CVSS vector
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N- Effective score
- 7.5 / 10 HIGH source: CNA overview
- CWE(s)
- —
- Reserved
- 2026-03-04
- Published
- 2026-05-18 00:00 UTC
- Last updated
- 2026-05-18 17:07 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/29xxx/CVE-2026-29963.json
- Linked Threat
- CVE-2026-29963 — CVE-2026-29963
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2026-05-18 18:17:21 UTC
- NVD last modified
- 2026-05-19 17:21:05 UTC
- NVD CVSS v3.1
- 7.5 / 10 HIGH source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
- NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N- Exploitability subscore
- 3.9 / 10
- Impact subscore
- 3.6 / 10
- EPSS score
- 0.0013 (probability of exploitation in next 30 days)
- EPSS percentile
- 31.78% vs all CVEs — higher = more likely to be exploited, as of 2026-05-24
NVD-assigned CWE(s):
CWE-22
(differs from the CNA list above)
NVD / KEV / EPSS data refreshed 2026-05-25 02:08 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2026-30783 - Assigner
- mitre
- Published
- May 18, 2026, 12:00:00 AM
- Updated
- May 19, 2026, 1:42:16 PM
- EUVD base score (CVSS 3.1)
-
7.5 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - EUVD-reported EPSS
- 0.1300
- Vendors
- n/a
- Products
-
n/a (n/a)
- Aliases
-
GHSA-wcm2-h52j-8wcv
ENISA description: HSC MailInspector 5.3.3-7 has a Path Traversal vulnerability due to improper validation of user-supplied input in the /tap/dw.php endpoint. The text parameter is used to construct file paths without adequate normalization or restriction to a safe base directory. A remote attacker can exploit this flaw to access arbitrary files on the underlying operating system, resulting in unauthorized disclosure of sensitive information.
Affected products (1)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| n/a | n/a |
n/a (affected)
|
— |
Affected products — CPE 2.3 (1) NVD
NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.
cpe:2.3:a:hsclabs:mailinspector:5.3.3-7:*:*:*:*:*:*:*
Vendor references (3)
References embedded in the original CVE record by the assigning CNA.
Web references (6)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
- https://github.com/sql3t0/cve-disclosures tenable:github.com
- https://github.com/sql3t0/cve-disclosures/blob/main/02_-_CVE-2026-29963_LFI%2BPath_Traversal.md tenable:github.com
- https://hsclabs.com/pt-br/mailinspector/ tenable:hsclabs.com
- https://nvd.nist.gov/vuln/detail/CVE-2026-29963 tenable:nvd.nist.gov
- https://www.cve.org/CVERecord?id=CVE-2026-29963 tenable:www.cve.org
- https://www.first.org/epss/ tenable:www.first.org
NVD-tagged references (3)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
- https://github.com/sql3t0/cve-disclosures cve@mitre.org Third Party Advisory
- https://github.com/sql3t0/cve-disclosures/blob/main/02_-_CVE-2026-29963_LFI%2BPath_Traversal.md cve@mitre.org Third Party Advisory
- https://hsclabs.com/pt-br/mailinspector/ cve@mitre.org Product
Remediations (18)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:cyberpress.org
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added two actively exploited Microsoft Defender vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog, issuing an urgent remediation directive for federal agencies with a due date of June 3, 2026 .
2026-05-23 21:55 UTC -
web:ismalicious.com
CVE & Vulnerability Management in 2026 : From Disclosure to Patch at Scale A practical guide to the CVE ecosystem, CVSS scoring, exploitability signals, and how security teams prioritize vulnerabilities without drowning in scanner noise.
2026-05-23 21:55 UTC -
web:nvd.nist.gov
An official website of the United States government Here's how you know
2026-05-23 21:55 UTC -
web:portal.msrc.microsoft.com
The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.
2026-05-23 21:55 UTC -
web:support.servicenow.com
ServiceNow has released patches that address reflected Cross Site Scripting (XSS) vulnerabilities that were identified in ServiceNow records. Additional Details These vulnerabilities are present in the following supported ServiceNow releases: Tokyo prior to Tokyo Patch 4a and Patch 5; and Utah prior to Utah Patch 1 The Rome release before Rome Patch 10 Hotfix 4b and San Diego release prior to ...
2026-05-23 21:55 UTC -
web:thecyberexpress.com
Cisco has released security updates to fix a critical vulnerability, tracked as CVE - 2026 -20223, affecting its Cisco Secure Workload platform. The flaw, which received the maximum CVSS score of 10.0, could allow an unauthenticated remote attacker to access sensitive information and make unauthorized configuration changes through vulnerable REST ...
2026-05-23 21:55 UTC -
web:www.bleepingcomputer.com
A critical Microsoft SharePoint vulnerability patched in January is now being exploited in attacks, the Cybersecurity and Infrastructure Security Agency (CISA) warned.
2026-05-23 21:55 UTC -
web:www.grammarly.com
Grammarly makes AI writing convenient. Work smarter with personalized AI guidance and text generation on any app or website.
2026-05-23 21:55 UTC -
web:www.oracle.com
This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.
2026-05-23 21:55 UTC -
web:zecurit.com
Get the complete breakdown of Microsoft's May 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .
2026-05-23 21:55 UTC -
web:blog.talosintelligence.com
Microsoft has released its monthly security update for May 2026 , which includes 137 vulnerabilities affecting a range of products, including 16 that Microsoft marked as "critical".
2026-05-26 02:57 UTC -
web:cybersecuritynews.com
Microsoft released its February 2026 Patch Tuesday updates on February 10, addressing 54 vulnerabilities, including six zero-days across Windows, Office, Azure, and developer tools.
2026-05-26 02:57 UTC -
web:redmondmag.com
Microsoft this week released one of the largest Patch Tuesday bundles in its history, delivering fixes for 163 new Microsoft CVEs in a month that includes three zero-days and eight Critical-rated ...
2026-05-26 02:57 UTC -
web:www.crowdstrike.com
Microsoft's April 2026 Patch Tuesday addresses 164 CVEs , featuring 8 Critical vulnerabilities, one exploited zero-day, and one disclosed zero-day.
2026-05-26 02:57 UTC -
web:www.helpnetsecurity.com
CVE - 2026 -20963, a remote code execution (RCE) SharePoint vulnerability Microsoft fixed in January 2026 , is being exploited by attackers.
2026-05-26 02:57 UTC -
web:www.microsoft.com
These Knowledge Base articles accompany all security updates and advisories, and include caveats or known issues with security updates. Additionally, support engineers document common concerns from customers in these KB articles. These Knowledge Base articles are published the Security Update Guide with each release on Patch Tuesday.
2026-05-26 02:57 UTC -
web:www.securityweek.com
Vulnerabilities CISA Warns of Attacks Exploiting Recent SharePoint Vulnerability The SharePoint remote code execution vulnerability CVE - 2026 -20963, which Microsoft patched in January, has been exploited in the wild.
2026-05-26 02:57 UTC -
web:www.sentinelone.com
CVE - 2026 -20963 is a remote code execution vulnerability in Microsoft SharePoint Server. Learn about its impact, affected versions, and mitigation methods.
2026-05-26 02:57 UTC
AI Forensic Analysis
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Raw JSON
The full cvelistV5 record. Download as CVE-2026-29963.json.
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