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Vulnerabilities

Vulnerability · CVE-2026-29963

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.

Published May 18, 2026 · catalog updated Jun 17, 2026 · HSC MailInspector 5.3.3-7 has

Check if you run it

No confirmed exploitation is on record for CVE-2026-29963. EPSS is 3.00%. Act only if a listed version of HSC MailInspector 5.3.3-7 has is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (HSC MailInspector 5.3.3-7 has).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
3.00%
Remediation
Advisory link
Affected products
cpe hsclabs/mailinspector

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe hsclabs/mailinspector5.3.3-7

How to fix CVE-2026-29963

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-29963. EPSS is 3.00%. Act only if a listed version of HSC MailInspector 5.3.3-7 has is installed.

Which versions are affected?

Compare what you have installed with 5.3.3-7. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-22: Path Traversal. EPSS 3.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 18, 2026 · NIST NVD

    Detected

    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 disclosur

  2. Jun 17, 2026 · NIST NVD

    Updated

    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 disclosur

Sources

  • CVE.orgVulnerability recordCVE-2026-29963

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-29963

    30-day exploitation probability 3.0%

    first.org
  • NIST NVDVulnerability recordCVE-2026-29963

    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

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.