7.5

CVE-2018-11796: apache software foundation apache tika

CVSS: 7.5v3.0HighModified
AliasesUBUNTU-CVE-2018-11796GHSA-h8q5-g2cj-qr5h
Published 09-10-2018Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2018-11796 is a high (CVSS 7.5) vulnerability in apache software foundation apache tika. EPSS estimates a 7.54% chance of exploitation in the next 30 days, higher than 94.4% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.0 (NVD)
EPSS score
7.54%
0%100%
Low · +0.65 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 09-10-2018
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

In Apache Tika 1.19 (CVE-2018-11761), we added an entity expansion limit for XML parsing. However, Tika reuses SAXParsers and calls reset() after each parse, which, for Xerces2 parsers, as per the documentation, removes the user-specified SecurityManager and thus removes entity expansion limits after the first parse. Apache Tika versions from 0.1 to 1.19 are therefore still vulnerable to entity expansions which can lead to a denial of service attack. Users should upgrade to 1.19.1 or later.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

7.54%

Chance of exploitation in the next 30 days

Percentile

94%

Versus all other CVEs

30-day change

+0.65 pp

From 6.88% on 18-09-2026

18-09-202618-10-2026
EPSS score
7.54%

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
  • tika≥ 0.1, ≤ 1.19
Apache software foundation1 product
Org.apache.tika1 product
  • tika-core≥ 0.1, < 1.19.1
Ubuntu1 product
  • tikaAll versions (No fix recorded)

4 vendors · 4 products

References

11 links
Show all 11 references