Buffer overflow in Redisbloom
CVE-2026-25589
RedisBloom is a probabilistic data structures module for Redis. In all versions of RedisBloom before 2.8.20, the module does not properly validate serialized values processed through the Redis RESTORE command. An authenticated attacker wit…
Vulnerability class: Buffer Overflow
EPSS: 0.003 (50.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Redisbloom — versions < 2.8.20
Weakness classification (CWE)
Public proof-of-concept exploits
References
- https://github.com/RedisBloom/RedisBloom/releases/tag/v2.8.20 (Product, Patch, x_refsource_MISC)
- https://github.com/RedisBloom/RedisBloom/security/advisories/GHSA-7862-34pw-44wv (x_refsource_CONFIRM, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-25589?
- CVE-2026-25589 is a high-severity vulnerability in Redisbloom, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-05-05.
- How severe is CVE-2026-25589?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2026-25589 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.