CVE-2026-89425 Affecting oracle-free-21-extras package, versions *


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.49% (40th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-ORACLEFREE21EXTRAS-20411799
  • published3 Oct 2026
  • disclosed23 Sept 2026

Introduced: 23 Sep 2026

NewCVE-2026-89425  (opens in a new tab)

How to fix?

There is no fixed version for Minimos:latest oracle-free-21-extras.

NVD Description

Note: Versions mentioned in the description apply only to the upstream oracle-free-21-extras package and not the oracle-free-21-extras package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

UTF8DataInputJsonParser._reportInvalidToken() in FasterXML jackson-core builds the offending-token text for its error message by appending Java identifier characters to a StringBuilder in a loop that has no upper bound. Unlike the three sibling parser implementations, including UTF8StreamJsonParser, it never consults ErrorReportConfiguration.getMaxErrorTokenLength() (default 256). A malformed token supplied to a parser created through JsonFactory.createParser(DataInput) is therefore accumulated in full. No StreamReadConstraints setting mitigates this: maxDocumentLength cannot be applied to DataInput sources at all, and maxStringLength does not cover this path because the accumulation bypasses ReadConstrainedTextBuffer. The reporter measured a 20,000,109-character exception message from a 20-million-character malformed token on the DataInput path, against 367 characters for identical input on the InputStream path. Scaling the payload drives the StringBuilder, which also incurs byte-to-char expansion and internal array doubling, to many times the raw payload size and can trigger OutOfMemoryError for the whole JVM. UTF8DataInputJsonParser was introduced in 2.8.0 together with createParser(DataInput); releases before 2.8.0 do not contain the affected class.

CVSS Base Scores

version 3.1