GCVE - cpe:2.3:a:leancrypto:leancrypto:*:*:*:*:*:*:*:*

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cpe:2.3:a:leancrypto:leancrypto:*:*:*:*:*:*:*:*

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Imported from gcve-enriched-dumps CVE data

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Identifier	cpeApplicability	Submitted	db.gcve.eu details	Rationale
`CVE:CVE-2026-34610`	vulnerable	2026-06-08 07:59:12.763400	leancrypto: Integer truncation in X.509 name parser enables certificate identity impersonation MEDIUM (5.9) The leancrypto library is a cryptographic library that exclusively contains only PQC-resistant cryptographic algorithms. Prior to version 1.7.1, lc_x509_extract_name_segment() casts size_t vlen to uint8_t when storing the Common Name (CN) length. An attacker who crafts a certificate with CN = victim's CN + 256 bytes padding gets cn_size = (uint8_t)(256 + N) = N, where N is the victim's CN length. The first N bytes of the attacker's CN are the victim's identity. After parsing, the attacker's certificate has an identical CN to the victim's — enabling identity impersonation in PKCS#7 verification, certificate chain matching, and code signing. This issue has been patched in version 1.7.1. Published: 2026-04-02T17:54:53.250Z Updated: 2026-04-03T17:25:10.195Z Open on db.gcve.eu Reference links https://github.com/smuellerDD/leancrypto/security/advisories/GHSA-636g-jxv4-v4gr https://github.com/smuellerDD/leancrypto/commit/5cdcbe12bd6c3d6e87e969972a580b44a74c3a6a https://github.com/smuellerDD/leancrypto/releases/tag/v1.7.1	Imported from gcve-enriched-dumps CVE data

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