EUVD-2026-74621
GHSA-7mc7-qjpc-23j7
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Network-reachable RSA operations require low-privilege access to trigger; exception causes availability disruption only, with no confidentiality or integrity impact established.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
3DescriptionCVE.org
An issue was discovered in the mirage-crypto-pk package before 2.3.0 for OCaml. There is an undocumented exception for a small message during RSA decryption or encryption.
AnalysisAI
RSA operations in mirage-crypto-pk for OCaml before version 2.3.0 raise an undocumented exception when processing abnormally small messages during encryption or decryption. Any OCaml application - including MirageOS unikernel services - that exposes RSA operations to attacker-influenced inputs without upstream size validation can have those operations disrupted by a remote attacker with low-privilege access. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must be able to supply an RSA message input (plaintext for encryption or ciphertext for decryption) to an application using mirage-crypto-pk before version 2.3.0. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.3 with vector AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L correctly positions this as a low-severity, availability-only issue. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade mirage-crypto-pk to version 2.3.0 or later, which introduces proper input-length validation before RSA operations proceed; vendor-released patch is confirmed available. … Detailed patch versions, workarounds, and compensating controls in full report. |
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