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A critical alternate-path flaw in Apache Tika precedes the 4.0.0-beta-1 fix, CVSS 9.8

Status: UPDATED  |  Advisory ID: CVE-2026-66756

Key Details

CVECVE-2026-66756
CVSS Score / Version9.8 (Critical) / CVSS v3.1
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Proseattack vector is network; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected productsApache tika
Classified asCWE-424 (Improper Protection of Alternate Path)
Exploitation prediction (EPSS)0.45% probability of exploitation in the next 30 days (38% percentile) -- FIRST.org's EPSS model.

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
Apachetika
SubsystemsGeneral OT
SectorsMultiple

What to Know

Improper Protection of Alternate Path vulnerability in Apache Tika.

This issue affects Apache Tika: from 4.0.0-alpha-1 before 4.0.0-beta-1.

Users are recommended to upgrade to version 4.0.0-beta-1, which fixes the issue.

What to Do

Monitor Apache's web page for any future patch releases. See vendor advisory link below.

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-66756
Vendor advisoryhttps://lists.apache.org/thread/ynjg5lxwhqpc83pczf5y5561o2l4o568