High severity7.5NVD Advisory· Published Apr 24, 2026· Updated Apr 28, 2026

CVE-2026-33524

Description

Zserio is a framework for serializing structured data with a compact and efficient way with low overhead. Prior to 2.18.1, a crafted payload as small as 4-5 bytes can force memory allocations of up to 16 GB, crashing any process with an OOM error (Denial of Service). This vulnerability is fixed in 2.18.1.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
io.github.ndsev:zserio-runtimeMaven	< 2.18.1	2.18.1

Affected products

Nds Association/Zserio
cpe:2.3:a:nds-association:zserio:*:*:*:*:*:*:*:*
Range: <2.18.1
ghsa-coords
pkg:maven/io.github.ndsev/zserio-runtime
Range: < 2.18.1

Patches

Vulnerability mechanics

References

github.com/ndsev/zserio/security/advisories/GHSA-cwq5-8pvq-j65jnvdExploitMitigationVendor AdvisoryWEB
github.com/advisories/GHSA-cwq5-8pvq-j65jghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2026-33524ghsaADVISORY
github.com/ndsev/zserio/commit/a9932de4b5eefb3afd5e18ca2fd758aa744a7c69ghsaWEB

News mentions

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cvss	0.488
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000