9.8

CVE-2026-66756: apache software foundation apache tika Improper Protection of Alternate Path

CVSS: 9.8v3.1CriticalAnalyzed
AliasesUBUNTU-CVE-2026-66756
Published 30-07-2026Last modified 30-07-2026
Open JSON

Vulnerability summary

CVE-2026-66756 is a critical (CVSS 9.8) Improper Protection of Alternate Path vulnerability in apache software foundation apache tika. EPSS estimates a 0.75% chance of exploitation in the next 30 days, higher than 53.9% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
0.75%
0%100%
Low · +0.30 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 30-07-2026
    PublishedVulnerability first disclosed.
  2. 30-07-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

5 scores · 3 sources · 2 versions

EPSS trend

Probability

0.75%

Chance of exploitation in the next 30 days

Percentile

54%

Versus all other CVEs

30-day change

+0.30 pp

From 0.45% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.75%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Apache1 product
  • tika4.0.0:alpha1 | 4.0.0:beta1-rc1
Apache software foundation1 product
Ubuntu1 product
  • tikaAll versions (No fix recorded)

3 vendors · 3 products

References

4 links