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CVE-2026-29964

HSC MailInspector v5.3.3-7 contains a Cross-Site Scripting (XSS) vulnerability in the /tap/tap.php endpoint due to improper neutralization of user-controlled input using alternate or obfuscated JavaScript syntax. The endpoint reflects unsanitized user input in HTTP responses without adequate output encoding, allowing a remote attacker to execute arbitrary JavaScript code in the context of a victim's browser.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:19de33eb8079b37e92f6599b1e55222eeb04fc4fc7baeebc10046d54432c2863
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"description":"n/a","lang":"en","type":"text"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:35f00fbbb73f474538342983c1d290ca472cadf7bf37fc55e7e4d018682f734c · sha256:a1bf75a5c0e11dc2… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-79","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:35f00fbbb73f474538342983c1d290ca472cadf7bf37fc55e7e4d018682f734c · sha256:a1bf75a5c0e11dc2… · /containers/adp/0/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:35f00fbbb73f474538342983c1d290ca472cadf7bf37fc55e7e4d018682f734c · sha256:a1bf75a5c0e11dc2… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:35f00fbbb73f474538342983c1d290ca472cadf7bf37fc55e7e4d018682f734c · sha256:a1bf75a5c0e11dc2… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"description":"n/a","lang":"en","type":"text"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:35f00fbbb73f474538342983c1d290ca472cadf7bf37fc55e7e4d018682f734c · sha256:a1bf75a5c0e11dc2… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-79","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:35f00fbbb73f474538342983c1d290ca472cadf7bf37fc55e7e4d018682f734c · sha256:a1bf75a5c0e11dc2… · /containers/adp/0/problemTypes/0/descriptions/0

Source references

3 source assertions
{"url":"https://github.com/sql3t0/cve-disclosures"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:35f00fbbb73f474538342983c1d290ca472cadf7bf37fc55e7e4d018682f734c · sha256:a1bf75a5c0e11dc2… · /containers/cna/references/1
{"url":"https://github.com/sql3t0/cve-disclosures/blob/main/03_-_CVE-2026-29964_XSS.md"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:35f00fbbb73f474538342983c1d290ca472cadf7bf37fc55e7e4d018682f734c · sha256:a1bf75a5c0e11dc2… · /containers/cna/references/2
{"url":"https://hsclabs.com/pt-br/mailinspector/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:35f00fbbb73f474538342983c1d290ca472cadf7bf37fc55e7e4d018682f734c · sha256:a1bf75a5c0e11dc2… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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