DEBIAN-CVE-2026-89425
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-89425
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-89425.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-89425
- Upstream
- Published
- 2026-09-23T03:17:04Z
- Modified
- 2026-09-24T08:47:26Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
Affected packages
Debian:12 / jackson-core
Package
- Name
- jackson-core
- Purl
- pkg:deb/debian/jackson-core?arch=source&distro=bookworm
Debian:13 / jackson-core
Package
- Name
- jackson-core
- Purl
- pkg:deb/debian/jackson-core?arch=source&distro=trixie
Debian:14 / jackson-core
Package
- Name
- jackson-core
- Purl
- pkg:deb/debian/jackson-core?arch=source&distro=forky