CVE-2026-54679: medium-severity vulnerability in jqlang jq
jq: potential integer overflow in jvp_string_append
Published
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.9epss 0.1%
jq is a command-line JSON processor. Prior to 1.8.2, on 32bit system, jvp_string_append has a chance of integer/multiple overflowing and then causing a massive buffer overrun. This vulnerability is fixed in 1.8.2.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
jqlang · jqRelated CVEs — jqlang jq
In the same product, most dangerous first.
CVE-2026-32316HIGHjq: Integer overflow in jvp_string_append() allows Heap-based Buffer OverflowEPSS 0.8%CVE-2026-39979MEDIUMjq: Out-of-Bounds Read in jv_parse_sized() Error Formatting for Non-NUL-Terminated Counted BuffersEPSS 0.6%CVE-2025-48060HIGHAddressSanitizer: stack-buffer-overflow in jq_fuzz_execute (jv_string_vfmt)EPSS 0.6%CVE-2023-50246MEDIUMjq has heap-buffer-overflow vulnerability in the function decToString in decNumber.cEPSS 0.5%CVE-2024-23337MEDIUMjq has signed integer overflow in jv.c:jvp_array_writeEPSS 0.5%CVE-2023-50268MEDIUMjq has stack-based buffer overflow in decNaNsEPSS 0.4%