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[GHSA-2w8x-224x-785m] sjcl is missing point-on-curve validation in sjcl.ecc.basicKey.publicKey #7223

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[GHSA-2w8x-224x-785m] sjcl is missing point-on-curve validation in sjcl.ecc.basicKey.publicKey #7223

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15 changes: 7 additions & 8 deletions advisories/github-reviewed/2026/03/GHSA-2w8x-224x-785m/GHSA-2w8x-224x-785m.json
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Original file line number Diff line number Diff line change
@@ -1,21 +1,17 @@
{
"schema_version": "1.4.0",
"id": "GHSA-2w8x-224x-785m",
"modified": "2026-03-18T16:10:06Z",
"modified": "2026-03-18T16:10:10Z",
"published": "2026-03-17T06:31:32Z",
"aliases": [
"CVE-2026-4258"
],
"summary": "sjcl is missing point-on-curve validation in sjcl.ecc.basicKey.publicKey",
"details": "All versions of the package sjcl are vulnerable to Improper Verification of Cryptographic Signature due to missing point-on-curve validation in sjcl.ecc.basicKey.publicKey(). An attacker can recover a victim's ECDH private key by sending crafted off-curve public keys and observing ECDH outputs. The dhJavaEc() function directly returns the raw x-coordinate of the scalar multiplication result (no hashing), providing a plaintext oracle without requiring any decryption feedback.",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P"
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
}
],
"affected": [
Expand All @@ -32,11 +28,14 @@
"introduced": "0"
},
{
"last_affected": "1.0.8"
"fixed": "1.0.9"
}
]
}
]
],
"database_specific": {
"last_known_affected_version_range": "<= 1.0.8"
}
}
],
"references": [
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