How severe is CVE-2026-54679?

CVE-2026-54679 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-54679 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-54679?

CVE-2026-54679 affects Jqlang Jq. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-54679?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-54679 have an EU (EUVD) identifier?

Yes. CVE-2026-54679 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39499.

When was CVE-2026-54679 published?

CVE-2026-54679 was published on 2026-06-25 and last updated on 2026-06-26.

CVE-2026-54679

CVE-2026-54679 is a medium-severity vulnerability in Jqlang Jq with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-190.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v4: 6.9
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39499
Weakness: CWE-190
Affected product: Jqlang Jq
Published: 2026-06-25
Last modified: 2026-06-26

Description

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.

Frequently asked questions

What is CVE-2026-54679?: 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.
How severe is CVE-2026-54679?: CVE-2026-54679 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-54679 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-54679?: CVE-2026-54679 affects Jqlang Jq. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-54679?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-54679 have an EU (EUVD) identifier?: Yes. CVE-2026-54679 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39499.
When was CVE-2026-54679 published?: CVE-2026-54679 was published on 2026-06-25 and last updated on 2026-06-26.

References

https://github.com/jqlang/jq/security/advisories/GHSA-29gj-222p-j7vx

Affected products (1)

cpe:2.3:a:jqlang:jq:*:*:*:*:*:*:*:*

More vulnerabilities in Jqlang Jq

CVE-2026-32316 — High (CVSS 8.2): jq is a command-line JSON processor. An integer overflow vulnerability exists through version 1.8.1 within the…
CVE-2024-53427 — High (CVSS 8.1): decNumberCopy in decNumber.c in jq through 1.7.1 does not properly consider that NaN is interpreted as numeric, which…
CVE-2025-48060 — High (CVSS 7.5): jq is a command-line JSON processor. In versions up to and including 1.7.1, a heap-buffer-overflow is present in…
CVE-2023-49355 — High (CVSS 7.5): decToString in decNumber/decNumber.c in jq 88f01a7 has a one-byte out-of-bounds write via the " []-1.2e-1111111111"…
CVE-2026-49839 — High (CVSS 7.1): jq is a command-line JSON processor. Prior to 1.8.2,` jq --rawfile` can turn a handled oversized-string error into…
CVE-2026-39979 — Medium (CVSS 6.5): jq is a command-line JSON processor. In commits before 2f09060afab23fe9390cce7cb860b10416e1bf5f, the jv_parse_sized()…

All CVEs affecting Jqlang Jq →

Other CWE-190 (Integer Overflow or Wraparound) vulnerabilities

CVE-2026-4689 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component. This vulnerability was…
CVE-2026-24814 — Critical (CVSS 10.0): Integer Overflow or Wraparound vulnerability in swoole swoole-src (thirdparty/hiredis modules). This vulnerability is…
CVE-2025-64721 — Critical (CVSS 10.0): Sandboxie is a sandbox-based isolation software for 32-bit and 64-bit Windows NT-based operating systems. In versions…
CVE-2015-5108 — Critical (CVSS 10.0): Integer overflow in Adobe Reader and Acrobat 10.x before 10.1.15 and 11.x before 11.0.12, Acrobat and Acrobat Reader DC…
CVE-2015-5097 — Critical (CVSS 10.0): Integer overflow in Adobe Reader and Acrobat 10.x before 10.1.15 and 11.x before 11.0.12, Acrobat and Acrobat Reader DC…
CVE-2013-2555 — Critical (CVSS 10.0): Integer overflow in Adobe Flash Player before 10.3.183.75 and 11.x before 11.7.700.169 on Windows and Mac OS X, before…

Browse all CWE-190 (Integer Overflow or Wraparound) vulnerabilities →