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Vulnerability Detail

CVE-2026-87732 Verified Sceawere Triage Sources: NVD / CISA KEV

Vulnerability Metadata

Severity
Medium
Score / CVSS
6.2
Creation Date
11h ago
Vendor
OCaml
Product
mirage-crypto
Attack Type
CWE-347 Improper Verification of Cryptographic Signature
Vector String
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack Complexity
LOW

Narrative and Response

Description

An issue was discovered in the mirage-crypto package before 2.2.0 for OCaml. The AES.GCM.authenticate_decrypt_into and Chacha20.authenticate_decrypt_into functions write the decrypted plaintext into a caller-provided buffer and only then compares the tag. On a forged tag, the functions returns false, but the destination buffer already holds the full plaintext.

Executive Summary

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Technical Details

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Mitigations

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References

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Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

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Additional Metadata

{
  "score": "6.2",
  "pubDate": "2026-09-09T05:18:20.277Z",
  "pubdate": "2026-09-09T05:18:20.277Z"
}
CVE-2026-87732: CVE-2026-87732 Vulnerability (MEDIUM Severity, CVSS: 6.2) | Sceawere