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Vulnerabilities

Vulnerability · CVE-2025-49128

Jackson-core contains core low-level incremental ("streaming") parser and generator abstractions used by Jackson Data Processor.

Published Jun 6, 2025 · catalog updated Jun 9, 2025 · FasterXML

Check if you run it

No confirmed exploitation is on record for CVE-2025-49128. EPSS is 0.39%. Act only if a listed version of FasterXML is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium4.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.39%
Remediation
Version ranges on file
Affected products
vendor FasterXML jackson-core 2.0.0, < 2.13.0

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 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 iss

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor FasterXML jackson-core 2.0.0, < 2.13.02.0.0, < 2.13.0

How to fix CVE-2025-49128

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-49128. EPSS is 0.39%. Act only if a listed version of FasterXML is installed.

Which versions are affected?

Compare what you have installed with FasterXML jackson-core 2.0.0, < 2.13.0 2.0.0, < 2.13.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.39%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 6, 2025 · EUVD

    Detected

    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 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 incorrect

  2. Jun 9, 2025 · EUVD

    Updated

    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 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 incorrect

Sources

  • CVE.orgVulnerability recordCVE-2025-49128

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-49128

    30-day exploitation probability 0.4%

    first.org
  • EUVDVulnerability recordEUVD-2025-17366

    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 method allows up to 500 bytes of unintended memory content to be includ

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.