Vulnerability in Myscale Myscaledb
CVE-2026-13513
A security flaw has been discovered in MyScale MyScaleDB up to 1.8.0. This vulnerability affects the function SegmentId::getCacheKey in the library src/VectorIndex/Common/SegmentId.h. The manipulation results in insufficient verification of data authenticity. It is possible to launch the attack remotely. A high complexity level is associated with this attack. It is stated that the exploitability is difficult. The exploit has been released to the public and may be used for attacks. The pull request to fix this issue awaits acceptance.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.002 (6.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 6.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Myscale Myscaledb — versions 1.0, 1.1, 1.2
Weakness classification (CWE)
References
- vuldb.com/vuln/374521 (technical-description, vdb-entry)
- vuldb.com/vuln/374521/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-13513 (third-party-advisory)
- vuldb.com/submit/838878 (third-party-advisory)
- github.com/myscale/MyScaleDB/issues/54 (issue-tracking, exploit)
- github.com/myscale/MyScaleDB/pull/55 (issue-tracking, patch)
- github.com/myscale/MyScaleDB/ (product)
Frequently asked questions
- What is CVE-2026-13513?
- CVE-2026-13513 is a medium-severity vulnerability in Myscale Myscaledb, classified under Insufficient Verification of Data Authenticity. CVSS score: 5.0/10. Published 2026-06-29.
- How severe is CVE-2026-13513?
- Medium severity. CVSS v3 base score is 5.0 out of 10.