Vulnerability details
CVE-2026-77930
EvoScientist EvoScientist
EvoScientist 0.1.0 before 0.2.5 Human Approval Bypass via Async Sub-Agents
CVSS 4.0
9.3Critical
Official description
EvoScientist 0.1.0 before 0.2.5 contains an approval bypass vulnerability that allows attackers to run host shell commands by delegating them to async sub-agents lacking an interrupt_on gate. Attackers can plant instructions in ingested content such as fetched web pages, so the agent calls start_async_task and runs commands with user privileges and environment secrets.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.3Critical | 4.0 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| 9.8Critical | 3.1 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| EvoScientist | EvoScientist | 0.1.0 ≤ v < 0.2.5 | CVEProject cvelistV5 (CNA) |
References and advisories
6- https://www.lasso.security/vulnerability-database/cve-2026-77930 technical-descriptionexploit
- https://github.com/EvoScientist/EvoScientist/issues/387 issue-tracking
- https://github.com/EvoScientist/EvoScientist/commit/d249e320bd856a7d31d859cfbb2bf75bab6c8686 patch
- https://github.com/EvoScientist/EvoScientist/releases/tag/v0.2.5 release-notes
- https://github.com/EvoScientist/EvoScientist/blob/ac58caab7bdd1706f3fee55891f611cd175d05b0/EvoScientist/subagents/_factory.py#L116 technical-description
- https://www.vulncheck.com/advisories/evoscientist-0.1.0-before-0.2.5-human-approval-bypass-via-async-sub-agents third-party-advisory
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Details
- Published
- 2026-10-20
- Last updated
- 2026-10-23
- State
- Published
- Assigner (CNA)
- VulnCheck
Exploit prediction (EPSS)
0.68%
Probability of exploitation in 30 days
52.8%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- Proof of concept
- Technical impact
- Total
Weaknesses (CWE)
- CWE-862Missing Authorization