VulnSocial

CVE-2026-29963PoC(hsclabs / mailinspector)

LOWCVSS 7.5 · HIGH

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

  • Hunt for exploitation attempts and persistence artifacts
  • Increase monitoring for publicly documented tradecraft
  • Track advisory updates for patch or workaround availability

Recommended action window: High priority (within 72h)

NVD 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.

hsclabs CVEsBack to dashboard
1.5/ 10 priority

Sources & remediation

Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-22

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • mailinspector

Threat summary

  • Public PoC is present in monitored signal
  • 1 mentions across 1 observed day

What's happening

  • PoC mentioned or linked in 1 signal
  • Technical details provided in 1 signal
  • 1 total mentions across 1 day

Affected systems

Vendors
hsclabs
Products
mailinspector

1 version affected across 1 product

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-09-15: 1PoC Mentioned / Linked · 2026-09-15: 1Technical Details · 2026-09-15: 109-15
Signal classification1 categories
PoC
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • pdnuclei-bot@pdnuclei_bot
    PoC

    🚨 CVE-2026-29963 - high 🚨 HSC MailInspector - Unauthenticated Arbitrary File Read > HSC MailInspector 5.3.3-7 contains a path traversal caused by improper validation of ... 👾 https://cloud.projectdiscovery.io/library/CVE-2026-29963 @pdnuclei #NucleiTemplates #cve

    Post summary

    The tweet announces a high-severity arbitrary file read vulnerability in HSC MailInspector and shares a link to a PoC template on ProjectDiscovery's library, indicating the availability of a proof of concept.

    00032237
    1.3K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Apphsclabsmailinspector5.3.3-7--

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