Upstream information
Description
The non-blocking (asynchronous) JSON parser in jackson-core does not enforce the maxNumberLength constraint defined in StreamReadConstraints (default: 1000 characters). An attacker able to submit JSON to an application that uses the async parser API can supply a number token of arbitrary length, leading to excessive memory allocation and potential CPU exhaustion, resulting in a denial of service.The synchronous parser enforces this limit correctly, so the constraint is applied inconsistently depending on which parsing API the application uses.
Root cause: the async parsing path in NonBlockingUtf8JsonParserBase and related classes never invokes the number length validation methods. Number parsing methods such as _finishNumberIntegralPart() accumulate digits into the TextBuffer without any length check, then call _valueComplete() to finalize the token. _valueComplete() does not call resetInt() or resetFloat(), which are the methods in ParserBase where validateIntegerLength() and validateFPLength() are performed. Because that validation step is skipped, maxNumberLength is never enforced on the async code path.
Impact: an attacker sending a JSON document containing an arbitrarily long number to an application using the async parser (for example a Spring WebFlux or other reactive application) can cause unbounded allocation in the TextBuffer and an OutOfMemoryError. If the application subsequently calls getBigIntegerValue() or getDecimalValue(), the JVM may additionally be tied up in O(n^2) BigInteger parsing, causing CPU-based denial of service.
No privileges or user interaction beyond the ability to submit data for parsing are required.
This issue affects com.fasterxml.jackson.core:jackson-core from version 2.15.0 through 2.18.5 and from 2.19.0 through 2.21.0, and tools.jackson.core:jackson-core from 3.0.0 through 3.0.x.
Versions prior to 2.15.0 are not affected, because StreamReadConstraints -- which defines the maxNumberLength setting -- was first introduced in jackson-core 2.15.0, so no such constraint exists to be bypassed in earlier releases. Note that GHSA-72hv-8253-57qq records the lower bound of the affected 2.x range as 2.0.0.
SUSE information
Overall state of this security issue: Resolved
This issue is currently rated as having moderate severity.
| CVSS detail | SUSE |
|---|---|
| Base Score | 5.3 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | Low |
| CVSSv3 Version | 3.1 |
| CVSS detail | CNA (HeroDevs) | SUSE |
|---|---|---|
| Base Score | 6.9 | 6.9 |
| Vector | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N |
| Attack Vector | Network | Network |
| Attack Complexity | Low | Low |
| Attack Requirements | None | None |
| Privileges Required | None | None |
| User Interaction | None | None |
| Vulnerable System Confidentiality Impact | None | None |
| Vulnerable System Integrity Impact | None | None |
| Vulnerable System Availability Impact | Low | Low |
| Subsequent System Confidentiality Impact | None | None |
| Subsequent System Integrity Impact | None | None |
| Subsequent System Availability Impact | None | None |
| CVSSv4 Version | 4.0 | 4.0 |
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
| Product(s) | Source package | State |
|---|---|---|
| Products under general support and receiving all security fixes. | ||
| SUSE Linux Enterprise Desktop 15 SP7 | jackson-core | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP7 | jackson-core | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | jackson-core | Not affected |
| SUSE Linux Enterprise Server 15 SP7 | jackson-core | Not affected |
| SUSE Linux Enterprise Server 16.0 | jackson-core | Not affected |
| SUSE Linux Enterprise Server 16.1 | jackson-core | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | jackson-core | Not affected |
| SUSE Linux Enterprise Server for SAP applications 16.0 | jackson-core | Not affected |
| SUSE Linux Enterprise Server for SAP applications 16.1 | jackson-core | Not affected |
| openSUSE Leap 16.0 | jackson-core | Not affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 15 SP4 | jackson-core | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | jackson-core | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | jackson-core | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | jackson-core | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP4 | jackson-core | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP5 | jackson-core | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP6 | jackson-core | Not affected |
| SUSE Linux Enterprise Server 15 SP4 | jackson-core | Not affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | jackson-core | Not affected |
| SUSE Linux Enterprise Server 15 SP5 | jackson-core | Not affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | jackson-core | Not affected |
| SUSE Linux Enterprise Server 15 SP6 | jackson-core | Not affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | jackson-core | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | jackson-core | Not affected |
| SUSE Manager Proxy 4.3 | jackson-core | Not affected |
| SUSE Manager Proxy LTS 4.3 | jackson-core | Not affected |
| SUSE Manager Retail Branch Server 4.3 | jackson-core | Not affected |
| SUSE Manager Retail Branch Server LTS 4.3 | jackson-core | Not affected |
| SUSE Manager Server 4.3 | jackson-core | Not affected |
| SUSE Manager Server LTS 4.3 | jackson-core | Not affected |
| SUSE Manager Server Module 4.3 | jackson-core | Not affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE Enterprise Storage 7 | jackson-core | Not affected |
| SUSE Enterprise Storage 7.1 | jackson-core | Not affected |
| SUSE Linux Enterprise Desktop 15 SP2 | jackson-core | Not affected |
| SUSE Linux Enterprise Desktop 15 SP3 | jackson-core | Not affected |
| SUSE Linux Enterprise Desktop 15 SP4 | jackson-core | Not affected |
| SUSE Linux Enterprise Desktop 15 SP5 | jackson-core | Not affected |
| SUSE Linux Enterprise Desktop 15 SP6 | jackson-core | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | jackson-core | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | jackson-core | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | jackson-core | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | jackson-core | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | jackson-core | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | jackson-core | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | jackson-core | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | jackson-core | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP6 | jackson-core | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP3 | jackson-core | Not affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP2 | jackson-core | Not affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP3 | jackson-core | Not affected |
| SUSE Linux Enterprise Real Time 15 SP2 | jackson-core | Not affected |
| SUSE Linux Enterprise Real Time 15 SP3 | jackson-core | Not affected |
| SUSE Linux Enterprise Real Time 15 SP4 | jackson-core | Not affected |
| SUSE Linux Enterprise Server 15 SP2 | jackson-core | Not affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | jackson-core | Not affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | jackson-core | Not affected |
| SUSE Linux Enterprise Server 15 SP3 | jackson-core | Not affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | jackson-core | Not affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | jackson-core | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | jackson-core | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | jackson-core | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | jackson-core | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | jackson-core | Not affected |
| SUSE Manager Proxy 4.1 | jackson-core | Not affected |
| SUSE Manager Proxy 4.2 | jackson-core | Not affected |
| SUSE Manager Retail Branch Server 4.1 | jackson-core | Not affected |
| SUSE Manager Retail Branch Server 4.2 | jackson-core | Not affected |
| SUSE Manager Server 4.1 | jackson-core | Not affected |
| SUSE Manager Server 4.2 | jackson-core | Not affected |
| openSUSE Leap 15.3 | jackson-core | Not affected |
| openSUSE Leap 15.4 | jackson-core | Not affected |
| openSUSE Leap 15.5 | jackson-core | Not affected |
| openSUSE Leap 15.6 | jackson-core | Not affected |
| Container Status | ||
| suse/manager/5.0/x86_64/server suse/manager/5.0/x86_64/server-attestation suse/multi-linux-manager/5.1/x86_64/server suse/multi-linux-manager/5.1/x86_64/server-attestation suse/multi-linux-manager/5.2/x86_64/server suse/multi-linux-manager/5.2/x86_64/server-attestation | jackson-core | Not affected |
SUSE Timeline for this CVE
CVE page created: Wed Aug 5 15:32:00 2026CVE page last modified: Wed Aug 5 15:32:00 2026