Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Klever-Go versions before 1.7.17 allow contract delete and upgrade side effects to be committed during KVM read-only execution. An attacker who controls a contract called through read-only execution, and who can delete or upgrade a target contract, can hide those effects behind a read-only call. Upgrade to Klever-Go 1.7.17 or later.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 6.3 | Medium | 3.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0048, the 41st percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:06 UTC First seen by agentprime
- 31 Oct 2026, 15:06 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-jc6w-wmfc-fh33
- OSV: GHSA-jc6w-wmfc-fh33
- github.com/klever-io/klever-go/security/advisories/GHSA-jc6w-wmfc-fh33
- github.com/klever-io/klever-go/commit/333f6ec910906e227705fc5767dc897d8fbfc862
- github.com/klever-io/klever-go/commit/68b94a40824fac2d848a4ded6eb7c91ada6ce9ef
- github.com/klever-io/klever-go