CVE•Published 2026-07-02•Modified 2026-07-02•0 articles on news•6 live references•NVD data
CVE-2026-54431
Vulnerability data via NVD (ingested)
CVSS v3.1
—
EPSS percentile
—
Weaknesses (CWE)
Description
In liboauth2 the Demonstrating Proof-of-Possession (DPoP) verifier accepts a proof whose JSON Web Key (jwk) header contains private key material. RFC 9449 section 4.3 step 7 requires the verifier to reject such a proof but oauth2_token_verify() function returns success for a malformed DPoP proof that embeds the private Elliptic Curve (EC) key in the header. This issue was fixed in version 2.3.0
Timeline
Published 2026-07-02
Modified 2026-07-02
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-2026-54431Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-54431Censys host search filtered to this CVE id.
grep.app
CVE-2026-54431Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-54431GitHub code search for direct mentions.
Google dork
"CVE-2026-54431" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-54431 on GitHub.
We haven't classified any articles referencing CVE-2026-54431 yet. The external references above still apply.