CVE-2025-69277
Published: January 7, 2026Last modified: January 15, 2026
Description
libsodium before ad3004e, in atypical use cases involving certain custom cryptography or untrusted data to crypto_core_ed25519_is_valid_point, mishandles checks for whether an elliptic curve point is valid because it sometimes allows points that aren't in the main cryptographic group.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 4.5 |
| Attack Vector | LOCAL |
| Attack complexity | HIGH |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | CHANGED |
| Confidentiality | LOW |
| Integrity impact | LOW |
| Availability impact | NONE |
| Vector | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | libsodium | Fixed (1.0.18-r3) |
| 25 LTS | libsodium | Fixed (1.0.20-r1) | |
| Stream | libsodium | Fixed (1.0.20-r1) |
References
- https://00f.net/2025/12/30/libsodium-vulnerability/
- https://github.com/jedisct1/libsodium/commit/ad3004ec8731730e93fcfbbc824e67eadc1c1bae
- https://github.com/pyca/pynacl/commit/96314884d88d1089ff5f336dba61d7abbcddbbf7
- https://github.com/pyca/pynacl/commit/ecf41f55a3d8f1e10ce89c61c4b4d67f3f4467cf
- https://github.com/pyca/pynacl/issues/920
- https://ianix.com/pub/ed25519-deployment.html
- https://lists.debian.org/debian-lts-announce/2026/01/msg00004.html
- https://news.ycombinator.com/item?id=46435614