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Vulnerability · Published Mar 26, 2026 · Assigned by Go

CVE-2026-32285Denial of service in github.com/buger/jsonparser

High 7.5

In plain English

A high-severity security flaw in github.com/buger/jsonparser from github.com/buger/jsonparser. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 56% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.8%top 43.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

The Delete function fails to properly validate offsets when processing malformed JSON input. This can lead to a negative slice index and a runtime panic, allowing a denial of service attack.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12golang-github-buger-jsonparserno fix listedDEBIAN-CVE-2026-32285
Debian:13golang-github-buger-jsonparserno fix listedDEBIAN-CVE-2026-32285
Debian:14golang-github-buger-jsonparser1.1.2-1DEBIAN-CVE-2026-32285
Gogithub.com/buger/jsonparser1.1.2GHSA-6g7g-w4f8-9c9x
Gogithub.com/buger/jsonparser1.1.2GO-2026-4514
Ubuntu:22.04:LTSgolang-github-buger-jsonparserno fix listedUBUNTU-CVE-2026-32285
Ubuntu:24.04:LTSgolang-github-buger-jsonparserno fix listedUBUNTU-CVE-2026-32285
Ubuntu:25.10golang-github-buger-jsonparserno fix listedUBUNTU-CVE-2026-32285
Ubuntu:26.04:LTSgolang-github-buger-jsonparserno fix listedUBUNTU-CVE-2026-32285
Ubuntu:26.10golang-github-buger-jsonparserno fix listedUBUNTU-CVE-2026-32285

Affected products (as reported)

VendorProductVersions
github.com/buger/jsonparser github.com/buger/jsonparser 0 – before 1.1.2

Weakness: CWE-1285 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References