Buffer overflow in Fasterxml Jackson-Core
CVE-2025-52999
jackson-core contains core low-level incremental ("streaming") parser and generator abstractions used by Jackson Data Processor. In versions prior to 2.15.0, if a user parses an input file and it has deeply nested data, Jackson could end up throwing a StackoverflowError if the depth is particularly large. jackson-core 2.15.0 contains a configurable limit for how deep Jackson will traverse in an input document, defaulting to an allowable depth of 1000. jackson-core will throw a StreamConstraintsException if the limit is reached. jackson-databind also benefits from this change because it uses jackson-core to parse JSON inputs. As a workaround, users should avoid parsing input files from untrusted sources.
Vulnerability class: Buffer Overflow
EPSS: 0.007 (52.2th percentile) — read the EPSS interpretation.
Affected products
- Fasterxml Jackson-core — versions < 2.15.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-52999?
- CVE-2025-52999 is a vulnerability in Fasterxml Jackson-Core, classified under Stack-based Buffer Overflow. Published 2025-06-25.
- Is CVE-2025-52999 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.