CVE•Published 2026-09-24•Modified 2026-10-06•0 articles on news•3 live references•NVD data
CVE-2026-88355
Vulnerability data via NVD (ingested)
CVSS v3.1
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS percentile
4
Exploit Prediction Scoring System · top 96% of all CVEs
Weaknesses (CWE)
Description
An incorrect buffer size calculation vulnerability exists in tinyexpr commit 4a7456e in new_expr(). For arity-0 expression nodes, including constants, variables, and zero-argument functions, the function allocates less memory than sizeof(te_expr) but treats the returned allocation as a complete te_expr object. This results in undefined behavior and can cause deterministic process termination in UBSan-instrumented builds.
Timeline
Published 2026-09-24
Modified 2026-10-06
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2026-88355Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-88355Censys host search filtered to this CVE id.
grep.app
CVE-2026-88355Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-88355GitHub code search for direct mentions.
Google dork
"CVE-2026-88355" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-88355 on GitHub.
We haven't classified any articles referencing CVE-2026-88355 yet. The external references above still apply.