CVE•Published 2026-09-04•Modified 2026-09-08•0 articles on news•6 live references•NVD data
CVE-2026-85534
Vulnerability data via NVD (ingested)
CVSS v3.1
5.9
MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS percentile
24
Exploit Prediction Scoring System · top 76% of all CVEs
Weaknesses (CWE)
Description
A flaw was found in libsoup. When a client sends an HTTP/2 request body from a non-pollable input stream, the library can buffer more data than the current flow-control window later allows. A malicious HTTP/2 server can shrink SETTINGS_INITIAL_WINDOW_SIZE while that buffered read is still in progress. The client then copies the full buffer into a smaller DATA callback without a runtime bounds check, which can abort the process or fail the HTTP/2 session.
Timeline
Published 2026-09-04
Modified 2026-09-08
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-2026-85534Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-85534Censys host search filtered to this CVE id.
grep.app
CVE-2026-85534Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-85534GitHub code search for direct mentions.
Google dork
"CVE-2026-85534" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-85534 on GitHub.
We haven't classified any articles referencing CVE-2026-85534 yet. The external references above still apply.