{"id":"CVE-2026-74876","aliases":["GHSA-8h88-gxp3-j7pg"],"title":"openssl-encrypt's unverified key bundle from_dict() + to_identity() path allows encryption to attacker keys","summary":"openssl-encrypt's unverified key bundle from_dict() + to_identity() path allows encryption to attacker keys","severity":"medium","vendor":"openssl-encrypt","product":"openssl-encrypt","ecosystem":"pip","affected":["openssl-encrypt < 1.4.0"],"patched":["openssl-encrypt 1.4.0"],"published":"2026-04-01","updated":"2026-08-18","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-8h88-gxp3-j7pg","references":[{"url":"https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-8h88-gxp3-j7pg"},{"url":"https://github.com/jahlives/openssl_encrypt/commit/f4a1ba660063cd9e17883829e5272a248525a16b"},{"url":"https://github.com/jahlives/openssl_encrypt"}],"tags":["osv","pip"],"ingestedAt":"2026-08-18T12:28:08.512Z","epss":0.00348,"epssPercentile":0.25591,"slug":"CVE-2026-74876","body":"## Overview\n\n### Summary\n\nThe `PublicKeyBundle.from_dict()` method in `openssl_encrypt/modules/key_bundle.py` at **lines 329-361** creates bundles from untrusted data without verifying the signature. The docstring warns to call `verify_signature()` after creation, but the `to_identity()` method (line 363-391) can convert an unverified bundle directly to an `Identity` object.\n\n### Affected Code\n\n```python\n@classmethod\ndef from_dict(cls, data: Dict) -> \"PublicKeyBundle\":\n    \"\"\"\n    SECURITY: Does NOT verify signature. Call verify_signature() after creation.\n    \"\"\"\n    # Creates bundle without verification\n```\n\n### Impact\n\nIf `from_dict()` followed by `to_identity()` is called without an intervening `verify_signature()` call, encryption could be performed against an attacker's public key, leaking secrets. While `key_resolver.py` (lines 146-147) does verify before use, the unguarded API path remains directly callable.\n\n### Recommended Fix\n\n- Add a `verified` flag to `PublicKeyBundle` that must be set before `to_identity()` can be called\n- Or have `to_identity()` automatically call `verify_signature()` and raise on failure\n- Or make `from_dict()` require verification as part of construction\n\n### Fix\n\nFixed in commit `f4a1ba6` on branch `releases/1.4.x` — from_dict() now verifies self_signature by default (verify=True parameter); raises ValueError on verification failure.\n\n## Affected packages\n\n- `openssl-encrypt < 1.4.0`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `openssl-encrypt 1.4.0`","depth":"sunlit","depthScore":28,"depthScoreParts":{"impact":27.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}