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CVE-2026-54903

Oj: Integer Overflow in Oj.load 2GB String Handling PUBLISHED

Description (CNA)

Oj (Optimized JSON) is a JSON parser and Object marshaller packaged as a Ruby gem. In versions prior to 3.17.2, Oj.load is vulnerable to heap corruption when parsing a JSON string longer than 2 GB. An integer overflow in buf_append_string (buf.h:61) converts the string length to a large negative size_t, causing memcpy to copy an astronomically large amount of data out of bounds. This crashes the process and can corrupt adjacent heap memory. The issue has been fixed in version 3.17.2.

Affected (CNA)

Vendor / productVersions
ohler55 / ojaffected < 3.17.2

CWE

CWE-190

References

ADP enrichment

CISA-ADP

No English description supplied.