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CVE-2025-49128— Jackson-core Vulnerable to Memory Disclosure via Source Snippet in JsonLocation

Quick assessment

Affected
FasterXML jackson-core
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

FasterXML jackson-core是FasterXML开源的一个API软件。 FasterXML jackson-core 2.13.0之前版本存在安全漏洞，该漏洞源于JsonLocation._appendSourceDesc方法问题，可能导致信息泄露。

CVSS 4.0 · Medium EPSS 0.39% · P31

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2025-49128

Vulnerability Information
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Vulnerability Title
Jackson-core Vulnerable to Memory Disclosure via Source Snippet in JsonLocation
Source: CVE Program / CVE List V5
Vulnerability Description
Jackson-core contains core low-level incremental ("streaming") parser and generator abstractions used by Jackson Data Processor. Starting in version 2.0.0 and prior to version 2.13.0, a flaw in jackson-core's `JsonLocation._appendSourceDesc` method allows up to 500 bytes of unintended memory content to be included in exception messages. When parsing JSON from a byte array with an offset and length, the exception message incorrectly reads from the beginning of the array instead of the logical payload start. This results in possible information disclosure in systems using pooled or reused buffers, like Netty or Vert.x. This issue was silently fixed in jackson-core version 2.13.0, released on September 30, 2021, via PR #652. All users should upgrade to version 2.13.0 or later. If upgrading is not immediately possible, applications can mitigate the issue by disabling exception message exposure to clients to avoid returning parsing exception messages in HTTP responses and/or disabling source inclusion in exceptions to prevent Jackson from embedding any source content in exception messages, avoiding leakage.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过错误消息导致的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
FasterXML jackson-core 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FasterXML jackson-core是FasterXML开源的一个API软件。 FasterXML jackson-core 2.13.0之前版本存在安全漏洞，该漏洞源于JsonLocation._appendSourceDesc方法问题，可能导致信息泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
FasterXML jackson-core >= 2.0.0, < 2.13.0 -

II. Public POCs for CVE-2025-49128

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III. Intelligence Information for CVE-2025-49128

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Patches & Fixes for CVE-2025-49128 (2)

Vendor Advisories for CVE-2025-49128 (1)

IV. Related Vulnerabilities

Same product: jackson-core
Same vendor: FasterXML
Same weakness: CWE-209

V. Comments for CVE-2025-49128

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