CVE-2026-77930CWE-862broken-access-control

CVE-2026-77930

Critical · published October 20, 2026

CVSS v3.1
9.8
EPSS
0%
Percentile
37.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00444 · 37.6th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-10-20T05:17Z
References (6)
https://github.com/EvoScientist/EvoScientist/blob/ac58caab7bdd1706f3fee55891f611cd175d05b0/EvoScientist/subagents/_factory.py#L116 · [email protected]https://github.com/EvoScientist/EvoScientist/commit/d249e320bd856a7d31d859cfbb2bf75bab6c8686 · [email protected]https://github.com/EvoScientist/EvoScientist/issues/387 · [email protected]https://github.com/EvoScientist/EvoScientist/releases/tag/v0.2.5 · [email protected]https://www.lasso.security/vulnerability-database/cve-2026-77930 · [email protected]https://www.vulncheck.com/advisories/evoscientist-0.1.0-before-0.2.5-human-approval-bypass-via-async-sub-agents · [email protected]
EPSS history
Timeline
  • 21 OCT 03:32Z
    EPSS moved — → 0%
    epss
  • 20 OCT 00:46Z
    EvoScientist 0.1.0 before 0.2.5 Human Approval Bypass via Async Sub-Agents
    cvelistv5
  • 20 OCT 00:46Z
    EvoScientist 0.1.0 before 0.2.5 Human Approval Bypass via Async Sub-Agents
    cvelistv5